<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:25063ab3-b1bc-44b5-94e0-0b23f28fa669,g:b6bd5062-b887-4c35-9e3b-3827d5a816f4-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.macerich.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="mac-20250630.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_1fcc6600-6120-4b11-8431-159fcf18b85e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_StatementTable_1fcc6600-6120-4b11-8431-159fcf18b85e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1fcc6600-6120-4b11-8431-159fcf18b85e" xlink:to="loc_srt_ProductOrServiceAxis_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe" xlink:to="loc_srt_ProductsAndServicesDomain_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_292b438f-1952-470e-a567-4463cb02c0fa" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_3bc60eb6-0fa0-4058-b5e9-6ca10dced5fe" xlink:to="loc_srt_ProductsAndServicesDomain_292b438f-1952-470e-a567-4463cb02c0fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateOtherMember_bc95ea8d-8170-41bc-a493-c7b9fcf15645" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_292b438f-1952-470e-a567-4463cb02c0fa" xlink:to="loc_us-gaap_RealEstateOtherMember_bc95ea8d-8170-41bc-a493-c7b9fcf15645" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementServiceMember_6cdccb47-7c6a-4949-978a-b4ca123a6ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ManagementServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_292b438f-1952-470e-a567-4463cb02c0fa" xlink:to="loc_us-gaap_ManagementServiceMember_6cdccb47-7c6a-4949-978a-b4ca123a6ca3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_dbc52673-8d50-4a27-8f94-9056617c6941" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_292b438f-1952-470e-a567-4463cb02c0fa" xlink:to="loc_us-gaap_RealEstateMember_dbc52673-8d50-4a27-8f94-9056617c6941" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d99d7c33-c791-45e4-899f-ccd0184a8fe4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1fcc6600-6120-4b11-8431-159fcf18b85e" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d99d7c33-c791-45e4-899f-ccd0184a8fe4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d99d7c33-c791-45e4-899f-ccd0184a8fe4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d99d7c33-c791-45e4-899f-ccd0184a8fe4" xlink:to="loc_us-gaap_RelatedPartyDomain_d99d7c33-c791-45e4-899f-ccd0184a8fe4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_0dfc3910-3e79-4c69-a474-4625b4d51d18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d99d7c33-c791-45e4-899f-ccd0184a8fe4" xlink:to="loc_us-gaap_RelatedPartyDomain_0dfc3910-3e79-4c69-a474-4625b4d51d18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_b843a33a-277c-4d96-9a69-eb7f53024392" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_0dfc3910-3e79-4c69-a474-4625b4d51d18" xlink:to="loc_us-gaap_RelatedPartyMember_b843a33a-277c-4d96-9a69-eb7f53024392" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_79cccffb-ebd9-479e-90b3-20ff308507cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_0dfc3910-3e79-4c69-a474-4625b4d51d18" xlink:to="loc_us-gaap_NonrelatedPartyMember_79cccffb-ebd9-479e-90b3-20ff308507cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_0e75cb59-0bbb-440e-ad80-ed39f544354f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_RevenuesAbstract_0e75cb59-0bbb-440e-ad80-ed39f544354f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_1b71e501-663c-4bae-9276-47c7491572cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_0e75cb59-0bbb-440e-ad80-ed39f544354f" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncome_1b71e501-663c-4bae-9276-47c7491572cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_797e953b-9664-4656-ac69-92929e4ee062" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_0e75cb59-0bbb-440e-ad80-ed39f544354f" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_797e953b-9664-4656-ac69-92929e4ee062" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_6db825ed-f7b1-4e7f-9f83-282fc4fa5731" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_0e75cb59-0bbb-440e-ad80-ed39f544354f" xlink:to="loc_us-gaap_Revenues_6db825ed-f7b1-4e7f-9f83-282fc4fa5731" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_e9e3d952-ccf7-4b91-985b-94e9abc62b03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_e9e3d952-ccf7-4b91-985b-94e9abc62b03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_a93bff10-8a4e-40b0-80b4-9c8f71c0ca8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:to="loc_us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_a93bff10-8a4e-40b0-80b4-9c8f71c0ca8e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_af2a8a1f-7d38-41c4-aca7-cc5448d130ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_af2a8a1f-7d38-41c4-aca7-cc5448d130ab" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_027f0171-da83-4c4d-9adc-4baaef2931f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:to="loc_us-gaap_DepreciationAndAmortization_027f0171-da83-4c4d-9adc-4baaef2931f7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CostsAndExpensesBeforeInterest_df4ebdbd-ee25-42cd-a240-34f7ac41f0dc" xlink:href="mac-20250630.xsd#mac_CostsAndExpensesBeforeInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_a8c42fb0-879e-4ea5-ab58-3b2e74703916" xlink:to="loc_mac_CostsAndExpensesBeforeInterest_df4ebdbd-ee25-42cd-a240-34f7ac41f0dc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseAbstract_58c1ba98-d0a8-4fe5-bbd9-93d257c2afa7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_InterestExpenseAbstract_58c1ba98-d0a8-4fe5-bbd9-93d257c2afa7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_b2d82915-eb2f-431c-ab8c-9abaf53e4a92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_58c1ba98-d0a8-4fe5-bbd9-93d257c2afa7" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_b2d82915-eb2f-431c-ab8c-9abaf53e4a92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_a528bcfe-13f4-4189-ab7b-2a804efcf902" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_CostsAndExpenses_a528bcfe-13f4-4189-ab7b-2a804efcf902" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_dad2fb46-1a8e-4371-a3e4-a370731e3e39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_dad2fb46-1a8e-4371-a3e4-a370731e3e39" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_2a16095b-d75a-41b5-8fe4-3ff115c81640" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_2a16095b-d75a-41b5-8fe4-3ff115c81640" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_a98d2c5c-8c08-4d4e-a0e2-76aac3425d09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_a98d2c5c-8c08-4d4e-a0e2-76aac3425d09" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_4ed2aeea-a11b-43d1-bf19-c1dd90320a79" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_ProfitLoss_4ed2aeea-a11b-43d1-bf19-c1dd90320a79" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0b2fc5dd-e078-4d89-b225-d593750a5f85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0b2fc5dd-e078-4d89-b225-d593750a5f85" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_055a75f0-21e1-4e6f-bbe1-dbcae79991e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_NetIncomeLoss_055a75f0-21e1-4e6f-bbe1-dbcae79991e5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_1d0db826-177e-4e9d-a639-5e9928f389ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_EarningsPerShareAbstract_1d0db826-177e-4e9d-a639-5e9928f389ef" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_0b5a16a0-c656-41e8-b90d-6f7988957bc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1d0db826-177e-4e9d-a639-5e9928f389ef" xlink:to="loc_us-gaap_EarningsPerShareBasic_0b5a16a0-c656-41e8-b90d-6f7988957bc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_cfd75b00-ad31-40e5-8dcf-a5080055f879" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1d0db826-177e-4e9d-a639-5e9928f389ef" xlink:to="loc_us-gaap_EarningsPerShareDiluted_cfd75b00-ad31-40e5-8dcf-a5080055f879" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_58000ea5-bd44-4611-9397-610977cecaf6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_73136111-59ea-4ba6-81aa-a448e00af548" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_58000ea5-bd44-4611-9397-610977cecaf6" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7ced6057-a317-4d9d-9758-eb3488f64102" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_58000ea5-bd44-4611-9397-610977cecaf6" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7ced6057-a317-4d9d-9758-eb3488f64102" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_5965967d-dc41-44fc-8b92-13660e7108c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_58000ea5-bd44-4611-9397-610977cecaf6" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_5965967d-dc41-44fc-8b92-13660e7108c3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="mac-20250630.xsd#CONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c3e1d7c8-c232-4e20-a0f6-84573927add3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_5f1b8d90-8ef8-4098-8040-5dac56cd7b96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c3e1d7c8-c232-4e20-a0f6-84573927add3" xlink:to="loc_us-gaap_StatementTable_5f1b8d90-8ef8-4098-8040-5dac56cd7b96" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_ee464d8b-12d2-4d15-926b-0da6084019ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_5f1b8d90-8ef8-4098-8040-5dac56cd7b96" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_ee464d8b-12d2-4d15-926b-0da6084019ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ee464d8b-12d2-4d15-926b-0da6084019ce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ee464d8b-12d2-4d15-926b-0da6084019ce" xlink:to="loc_us-gaap_EquityComponentDomain_ee464d8b-12d2-4d15-926b-0da6084019ce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_95548714-fb76-4a2c-9c8f-04b3afa4350f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ee464d8b-12d2-4d15-926b-0da6084019ce" xlink:to="loc_us-gaap_EquityComponentDomain_95548714-fb76-4a2c-9c8f-04b3afa4350f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_95548714-fb76-4a2c-9c8f-04b3afa4350f" xlink:to="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_c0db183d-75de-4e51-8df9-a79905f629b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:to="loc_us-gaap_CommonStockMember_c0db183d-75de-4e51-8df9-a79905f629b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_5d872e98-20b1-4546-af5e-d7ed18f55da3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_5d872e98-20b1-4546-af5e-d7ed18f55da3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_d7f66701-7074-4f95-ab8d-28df72d6b9ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:to="loc_us-gaap_RetainedEarningsMember_d7f66701-7074-4f95-ab8d-28df72d6b9ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_77972e63-af4d-4c95-a752-5a5aaa3bc1b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_9b42acee-06a2-44af-9eb9-ca06cc651364" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_77972e63-af4d-4c95-a752-5a5aaa3bc1b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_5c6b4106-dc8d-4e3a-8df4-86872fe749d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_95548714-fb76-4a2c-9c8f-04b3afa4350f" xlink:to="loc_us-gaap_NoncontrollingInterestMember_5c6b4106-dc8d-4e3a-8df4-86872fe749d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c3e1d7c8-c232-4e20-a0f6-84573927add3" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_ad17f5cd-4196-43f3-be63-1c668499cc81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_ad17f5cd-4196-43f3-be63-1c668499cc81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_0113f8dc-d3b4-40c6-868d-5177a14ffc8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_0113f8dc-d3b4-40c6-868d-5177a14ffc8e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_d174436d-e358-452c-a5cb-abf12133331e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_ProfitLoss_d174436d-e358-452c-a5cb-abf12133331e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_0dfed184-9ebd-440e-883e-bde744fe5cb1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_0dfed184-9ebd-440e-883e-bde744fe5cb1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_202a26c0-824c-427c-8581-454fca9a0a23" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_202a26c0-824c-427c-8581-454fca9a0a23" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_425a59e2-1b37-4d3b-9453-61f621771fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_425a59e2-1b37-4d3b-9453-61f621771fd2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_48b1bb37-e391-4f6f-a7e2-bdd1c88a844f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_48b1bb37-e391-4f6f-a7e2-bdd1c88a844f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_4c59b21c-c1ef-41ee-a451-99018beed771" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_4c59b21c-c1ef-41ee-a451-99018beed771" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_fa247c51-b6e7-4c11-b217-419d07e61578" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_fa247c51-b6e7-4c11-b217-419d07e61578" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_e2605737-0eaf-4d40-ae1c-615feea17c28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_DividendsCommonStockCash_e2605737-0eaf-4d40-ae1c-615feea17c28" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_ca303509-feba-4d4c-b9de-2383c0259988" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_ca303509-feba-4d4c-b9de-2383c0259988" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_6285e087-0e9c-433f-8453-7ec5a56b4d83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfUnits_6285e087-0e9c-433f-8453-7ec5a56b4d83" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits_60a4d211-9488-403a-80f1-f7ecea549af4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits_60a4d211-9488-403a-80f1-f7ecea549af4" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_44fc315f-fb9a-4512-893a-e72cf776da76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_51272adb-8a04-44fb-b642-5c4a6c3592ed" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_44fc315f-fb9a-4512-893a-e72cf776da76" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_9ddc241b-8cc1-473c-ba29-eeeade960401" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_3998ed63-c4fa-4cd7-9eca-2a0f63693f66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/OrganizationDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#OrganizationDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/OrganizationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipLineItems_998a6e22-b9c9-46bb-883c-b57c481a26f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipTable_0339dc61-263f-441b-b5a9-b12e2f74ea97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipLineItems_998a6e22-b9c9-46bb-883c-b57c481a26f2" xlink:to="loc_us-gaap_ScheduleOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipTable_0339dc61-263f-441b-b5a9-b12e2f74ea97" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_e1baaa98-1456-479a-b83f-7884463aca74" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipTable_0339dc61-263f-441b-b5a9-b12e2f74ea97" xlink:to="loc_srt_OwnershipAxis_e1baaa98-1456-479a-b83f-7884463aca74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_e1baaa98-1456-479a-b83f-7884463aca74_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_e1baaa98-1456-479a-b83f-7884463aca74" xlink:to="loc_srt_OwnershipDomain_e1baaa98-1456-479a-b83f-7884463aca74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_2699a29c-bcd9-49c9-b7d9-72ec1ba378e5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_e1baaa98-1456-479a-b83f-7884463aca74" xlink:to="loc_srt_OwnershipDomain_2699a29c-bcd9-49c9-b7d9-72ec1ba378e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_TheMacerichPartnershipLPMember_95fb4e17-9677-41d0-aa71-420baef2385e" xlink:href="mac-20250630.xsd#mac_TheMacerichPartnershipLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_2699a29c-bcd9-49c9-b7d9-72ec1ba378e5" xlink:to="loc_mac_TheMacerichPartnershipLPMember_95fb4e17-9677-41d0-aa71-420baef2385e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_ba7a8c73-73ec-4fc8-842a-69fc9deff518" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipLineItems_998a6e22-b9c9-46bb-883c-b57c481a26f2" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_ba7a8c73-73ec-4fc8-842a-69fc9deff518" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_NumberOfRealEstateManagementCompanies_35d15617-2929-4b2b-9f77-3b98777a69d8" xlink:href="mac-20250630.xsd#mac_NumberOfRealEstateManagementCompanies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipLineItems_998a6e22-b9c9-46bb-883c-b57c481a26f2" xlink:to="loc_mac_NumberOfRealEstateManagementCompanies_35d15617-2929-4b2b-9f77-3b98777a69d8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/SummaryofSignificantAccountingPoliciesScheduleofVariableInterestEntitiesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#SummaryofSignificantAccountingPoliciesScheduleofVariableInterestEntitiesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/SummaryofSignificantAccountingPoliciesScheduleofVariableInterestEntitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_660a7649-ff90-4915-a951-da7004edd450" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_dbf5b548-4011-4950-8ed4-67a1d9fb4c7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_660a7649-ff90-4915-a951-da7004edd450" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_dbf5b548-4011-4950-8ed4-67a1d9fb4c7b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_d41cb9f2-af3d-4af2-b42c-d1de1537731c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_dbf5b548-4011-4950-8ed4-67a1d9fb4c7b" xlink:to="loc_srt_ConsolidatedEntitiesAxis_d41cb9f2-af3d-4af2-b42c-d1de1537731c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_d41cb9f2-af3d-4af2-b42c-d1de1537731c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_d41cb9f2-af3d-4af2-b42c-d1de1537731c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_d41cb9f2-af3d-4af2-b42c-d1de1537731c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_d1f27a33-82dc-454c-9a78-1957ed1946e1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_d41cb9f2-af3d-4af2-b42c-d1de1537731c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_d1f27a33-82dc-454c-9a78-1957ed1946e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_74efe31d-a370-4110-8090-dd58a9795fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_d1f27a33-82dc-454c-9a78-1957ed1946e1" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_74efe31d-a370-4110-8090-dd58a9795fe6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_3b8827f3-b5a8-4f7e-8f71-6c8c7cc985d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_660a7649-ff90-4915-a951-da7004edd450" xlink:to="loc_us-gaap_AssetsAbstract_3b8827f3-b5a8-4f7e-8f71-6c8c7cc985d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_8c3c86ec-2223-457a-9697-a41294526041" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_3b8827f3-b5a8-4f7e-8f71-6c8c7cc985d9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_8c3c86ec-2223-457a-9697-a41294526041" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_07fa047f-9ce5-4459-98ef-09d97a533e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_3b8827f3-b5a8-4f7e-8f71-6c8c7cc985d9" xlink:to="loc_us-gaap_OtherAssets_07fa047f-9ce5-4459-98ef-09d97a533e7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_114c898b-4761-4680-8b05-c736d9494ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_3b8827f3-b5a8-4f7e-8f71-6c8c7cc985d9" xlink:to="loc_us-gaap_Assets_114c898b-4761-4680-8b05-c736d9494ecd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_d03f7b65-9eec-4c44-821e-3bc92ba636f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_660a7649-ff90-4915-a951-da7004edd450" xlink:to="loc_us-gaap_LiabilitiesAbstract_d03f7b65-9eec-4c44-821e-3bc92ba636f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebt_a136fda2-3652-490b-99e7-390a463e84f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_d03f7b65-9eec-4c44-821e-3bc92ba636f6" xlink:to="loc_us-gaap_SecuredDebt_a136fda2-3652-490b-99e7-390a463e84f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_e9c4cc93-5a7b-46d2-a9c0-24280aea8f3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_d03f7b65-9eec-4c44-821e-3bc92ba636f6" xlink:to="loc_us-gaap_OtherLiabilities_e9c4cc93-5a7b-46d2-a9c0-24280aea8f3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_5c1ddff4-34eb-4f3b-a63c-4820c9567d90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_d03f7b65-9eec-4c44-821e-3bc92ba636f6" xlink:to="loc_us-gaap_Liabilities_5c1ddff4-34eb-4f3b-a63c-4820c9567d90" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/EarningsPerShareEPSScheduleofReconciliationofNumeratorandDenominatorUsedinComputationofEarningsPerShareDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#EarningsPerShareEPSScheduleofReconciliationofNumeratorandDenominatorUsedinComputationofEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/EarningsPerShareEPSScheduleofReconciliationofNumeratorandDenominatorUsedinComputationofEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d3f30a7c-4c6f-45e1-8f83-25711da759f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7819498d-bdfd-44ea-97a8-4a33ac5069cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d3f30a7c-4c6f-45e1-8f83-25711da759f3" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7819498d-bdfd-44ea-97a8-4a33ac5069cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7819498d-bdfd-44ea-97a8-4a33ac5069cd" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3e6e80d4-dea8-4c9e-adce-8f0fb46f4500" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_929ca6e9-a1d2-40f0-b681-aebdb7bb8b33" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3e6e80d4-dea8-4c9e-adce-8f0fb46f4500" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PreferredNonparticipatingConvertibleUnitsMember_684a15d3-eb21-4afb-b5bf-791d4dd4b240" xlink:href="mac-20250630.xsd#mac_PreferredNonparticipatingConvertibleUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3e6e80d4-dea8-4c9e-adce-8f0fb46f4500" xlink:to="loc_mac_PreferredNonparticipatingConvertibleUnitsMember_684a15d3-eb21-4afb-b5bf-791d4dd4b240" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PartnershipUnitsMember_186675c8-6283-49b9-aa65-614edc9ff84b" xlink:href="mac-20250630.xsd#mac_PartnershipUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3e6e80d4-dea8-4c9e-adce-8f0fb46f4500" xlink:to="loc_mac_PartnershipUnitsMember_186675c8-6283-49b9-aa65-614edc9ff84b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_e7503b13-0bac-455d-ba93-5547cdd82b65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d3f30a7c-4c6f-45e1-8f83-25711da759f3" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_e7503b13-0bac-455d-ba93-5547cdd82b65" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#InvestmentsinUnconsolidatedJointVenturesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e5d7b4a5-a458-4b59-b707-b78681ebf87b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e5d7b4a5-a458-4b59-b707-b78681ebf87b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_e5d7b4a5-a458-4b59-b707-b78681ebf87b_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e5d7b4a5-a458-4b59-b707-b78681ebf87b" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_e5d7b4a5-a458-4b59-b707-b78681ebf87b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e5d7b4a5-a458-4b59-b707-b78681ebf87b" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PropcorIIAssociatesLLCBoulevardShopsMember_0ec22ffd-24ab-4b66-ba7c-aeb4f9035aa8" xlink:href="mac-20250630.xsd#mac_PropcorIIAssociatesLLCBoulevardShopsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_PropcorIIAssociatesLLCBoulevardShopsMember_0ec22ffd-24ab-4b66-ba7c-aeb4f9035aa8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DevelopmentOfPremiumOutletsInLosAngelesMember_2598db92-1430-43e6-a1de-7b2c25d583a1" xlink:href="mac-20250630.xsd#mac_DevelopmentOfPremiumOutletsInLosAngelesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_DevelopmentOfPremiumOutletsInLosAngelesMember_2598db92-1430-43e6-a1de-7b2c25d583a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ChandlerFashionCenterMember_d4724294-19de-4430-ae53-5e716ecfdb00" xlink:href="mac-20250630.xsd#mac_ChandlerFashionCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_ChandlerFashionCenterMember_d4724294-19de-4430-ae53-5e716ecfdb00" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CountryClubPlazaMember_07eefb31-3398-4e9b-a0ca-27f11f4c9369" xlink:href="mac-20250630.xsd#mac_CountryClubPlazaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_CountryClubPlazaMember_07eefb31-3398-4e9b-a0ca-27f11f4c9369" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BiltmoreFashionParkRetailCenterInPhoenixArizonaMember_71c180ea-3c6e-44cb-9fcf-133e84abf5fd" xlink:href="mac-20250630.xsd#mac_BiltmoreFashionParkRetailCenterInPhoenixArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_BiltmoreFashionParkRetailCenterInPhoenixArizonaMember_71c180ea-3c6e-44cb-9fcf-133e84abf5fd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember_9675d0a9-24c5-4bb6-87f1-2e6207085bf0" xlink:href="mac-20250630.xsd#mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember_9675d0a9-24c5-4bb6-87f1-2e6207085bf0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FlatIronCrossingMember_d344482d-a648-49ba-b73b-01e6f71dee92" xlink:href="mac-20250630.xsd#mac_FlatIronCrossingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_FlatIronCrossingMember_d344482d-a648-49ba-b73b-01e6f71dee92" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ParadiseValleyMallInPhoenixArizonaMember_aa7c0add-c0fa-4ca1-9c3f-b50ed7d2e959" xlink:href="mac-20250630.xsd#mac_ParadiseValleyMallInPhoenixArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_37751c03-00ae-4b31-86da-2f8a68f6c460" xlink:to="loc_mac_ParadiseValleyMallInPhoenixArizonaMember_aa7c0add-c0fa-4ca1-9c3f-b50ed7d2e959" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0699c2e1-d194-4db6-a601-c6d88cc95d8d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0699c2e1-d194-4db6-a601-c6d88cc95d8d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_0699c2e1-d194-4db6-a601-c6d88cc95d8d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0699c2e1-d194-4db6-a601-c6d88cc95d8d" xlink:to="loc_us-gaap_RelatedPartyDomain_0699c2e1-d194-4db6-a601-c6d88cc95d8d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_faa0518e-ac88-415c-8c1a-0a98d13ec69c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0699c2e1-d194-4db6-a601-c6d88cc95d8d" xlink:to="loc_us-gaap_RelatedPartyDomain_faa0518e-ac88-415c-8c1a-0a98d13ec69c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_0d66bae7-662d-4f0c-8cea-0212deb57beb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_faa0518e-ac88-415c-8c1a-0a98d13ec69c" xlink:to="loc_us-gaap_CorporateJointVentureMember_0d66bae7-662d-4f0c-8cea-0212deb57beb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_00adfc2c-c802-46e0-9270-9a783e5fa731" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_srt_CounterpartyNameAxis_00adfc2c-c802-46e0-9270-9a783e5fa731" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_00adfc2c-c802-46e0-9270-9a783e5fa731_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_00adfc2c-c802-46e0-9270-9a783e5fa731" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_00adfc2c-c802-46e0-9270-9a783e5fa731_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_625b2a34-14be-49f2-8f8a-5f264100b161" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_00adfc2c-c802-46e0-9270-9a783e5fa731" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_625b2a34-14be-49f2-8f8a-5f264100b161" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ThirdPartyMember_64f22aab-69f2-4242-84b7-acdbb63e6224" xlink:href="mac-20250630.xsd#mac_ThirdPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_625b2a34-14be-49f2-8f8a-5f264100b161" xlink:to="loc_mac_ThirdPartyMember_64f22aab-69f2-4242-84b7-acdbb63e6224" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_75273074-0d42-4ce3-a682-66686025c6a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_us-gaap_AssetAcquisitionAxis_75273074-0d42-4ce3-a682-66686025c6a0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_75273074-0d42-4ce3-a682-66686025c6a0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_75273074-0d42-4ce3-a682-66686025c6a0" xlink:to="loc_us-gaap_AssetAcquisitionDomain_75273074-0d42-4ce3-a682-66686025c6a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_8526a656-b573-4ed1-b488-e74cf669fa24" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_75273074-0d42-4ce3-a682-66686025c6a0" xlink:to="loc_us-gaap_AssetAcquisitionDomain_8526a656-b573-4ed1-b488-e74cf669fa24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_f87fb833-5ac5-4792-b2b1-d3c640220797" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_8526a656-b573-4ed1-b488-e74cf669fa24" xlink:to="loc_mac_ArrowheadTowneCenterMember_f87fb833-5ac5-4792-b2b1-d3c640220797" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_99cd78b2-1a33-4b7f-8c60-a31251fd60e8" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_8526a656-b573-4ed1-b488-e74cf669fa24" xlink:to="loc_mac_SouthPlainsMallMember_99cd78b2-1a33-4b7f-8c60-a31251fd60e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_53117613-af6a-4d2b-b531-b4622216a815" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_53117613-af6a-4d2b-b531-b4622216a815" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_53117613-af6a-4d2b-b531-b4622216a815_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_53117613-af6a-4d2b-b531-b4622216a815" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_53117613-af6a-4d2b-b531-b4622216a815_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_9cd1b12b-b593-46e7-b14d-ac685a2bfb68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_53117613-af6a-4d2b-b531-b4622216a815" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_9cd1b12b-b593-46e7-b14d-ac685a2bfb68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_19f2bdc6-bffc-4072-b64b-fae66835658d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_9cd1b12b-b593-46e7-b14d-ac685a2bfb68" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_19f2bdc6-bffc-4072-b64b-fae66835658d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_us-gaap_DebtInstrumentAxis_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_357a4f5f-a16b-4dd4-a39a-5d9323d9aef6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_f4da6fb4-d9ef-4ea6-b7bb-52e3ec3746b7" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_357a4f5f-a16b-4dd4-a39a-5d9323d9aef6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MezzanineLoanMember_c96daf7b-c08b-4ce0-bf4c-2de8a59e93cf" xlink:href="mac-20250630.xsd#mac_MezzanineLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_357a4f5f-a16b-4dd4-a39a-5d9323d9aef6" xlink:to="loc_mac_MezzanineLoanMember_c96daf7b-c08b-4ce0-bf4c-2de8a59e93cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FirstMortgageMember_7c712d2b-edd6-4672-a324-d80f0211e611" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FirstMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_357a4f5f-a16b-4dd4-a39a-5d9323d9aef6" xlink:to="loc_us-gaap_FirstMortgageMember_7c712d2b-edd6-4672-a324-d80f0211e611" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e9212ab2-fc60-429c-b868-0837ade9b7af" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_85e17b4b-ac9a-4aa0-a832-9cd89600989c" xlink:to="loc_srt_RangeAxis_e9212ab2-fc60-429c-b868-0837ade9b7af" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e9212ab2-fc60-429c-b868-0837ade9b7af_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e9212ab2-fc60-429c-b868-0837ade9b7af" xlink:to="loc_srt_RangeMember_e9212ab2-fc60-429c-b868-0837ade9b7af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f6b4f901-0468-42bb-9d9f-9f8cd76ae601" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e9212ab2-fc60-429c-b868-0837ade9b7af" xlink:to="loc_srt_RangeMember_f6b4f901-0468-42bb-9d9f-9f8cd76ae601" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_ec450bfd-a4f1-4375-81ff-f7f0a5c86324" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_WeightedAverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f6b4f901-0468-42bb-9d9f-9f8cd76ae601" xlink:to="loc_srt_WeightedAverageMember_ec450bfd-a4f1-4375-81ff-f7f0a5c86324" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_0dc9ecaf-b98d-44b3-8563-77a6d1dc653a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_RepaymentsOfDebt_0dc9ecaf-b98d-44b3-8563-77a6d1dc653a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_a82861af-43d6-4b2d-a15e-a55d71903600" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_a82861af-43d6-4b2d-a15e-a55d71903600" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_722c665b-e353-488b-a538-644c829d52d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_722c665b-e353-488b-a538-644c829d52d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCapInterestRate_a91a6db9-030a-4edf-853a-622a2530b983" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCapInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_DerivativeCapInterestRate_a91a6db9-030a-4edf-853a-622a2530b983" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercent_cef8d0d0-dc81-4231-9e8a-90c1828bb95e" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_JointVentureOwnershipPercent_cef8d0d0-dc81-4231-9e8a-90c1828bb95e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_9cecd251-d9bf-4cef-81f3-f9647090b2cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ImpairmentOfRealEstate_9cecd251-d9bf-4cef-81f3-f9647090b2cc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercentAcquired_2d22d2d0-181c-48fd-9fa2-eb803d4d9b0d" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercentAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_JointVentureOwnershipPercentAcquired_2d22d2d0-181c-48fd-9fa2-eb803d4d9b0d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionConsiderationTransferred_fbb3febb-d125-4763-8820-cdc724746141" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_AssetAcquisitionConsiderationTransferred_fbb3febb-d125-4763-8820-cdc724746141" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionPercentageOfSharesOwned_54da3e1e-37b2-4cfd-acaf-2b83231ddf76" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionPercentageOfSharesOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_AssetAcquisitionPercentageOfSharesOwned_54da3e1e-37b2-4cfd-acaf-2b83231ddf76" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_75725997-69d9-4b6f-8dd4-205ca4c3ad02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_75725997-69d9-4b6f-8dd4-205ca4c3ad02" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_41c6f51b-c948-428b-ad96-35d26bec0a8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_41c6f51b-c948-428b-ad96-35d26bec0a8e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfBuildings_36d73c38-1a50-4fb8-9d39-9bb355def1c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfBuildings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ProceedsFromSaleOfBuildings_36d73c38-1a50-4fb8-9d39-9bb355def1c3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_e793a49b-8e89-4638-990b-79545424aa02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_e793a49b-8e89-4638-990b-79545424aa02" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_EquityInterestPercentageSold_78b01dcd-8ad6-4475-849a-5d6b3936291e" xlink:href="mac-20250630.xsd#mac_EquityInterestPercentageSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_EquityInterestPercentageSold_78b01dcd-8ad6-4475-849a-5d6b3936291e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_f959d2f0-ac9f-4e4b-a6e4-b51bd0b1ed45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_f959d2f0-ac9f-4e4b-a6e4-b51bd0b1ed45" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ProceedsFromSaleOfPartnershipInterestsOtherAssetsNet_dd19b818-2ee0-40c9-8c27-6d965e94f25a" xlink:href="mac-20250630.xsd#mac_ProceedsFromSaleOfPartnershipInterestsOtherAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_ProceedsFromSaleOfPartnershipInterestsOtherAssetsNet_dd19b818-2ee0-40c9-8c27-6d965e94f25a" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_c85f9767-df22-4160-aaa1-b997c48f32b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_c85f9767-df22-4160-aaa1-b997c48f32b2" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentExtensionTerm_f84316d6-f550-4643-9c78-40540b364f1f" xlink:href="mac-20250630.xsd#mac_DebtInstrumentExtensionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_DebtInstrumentExtensionTerm_f84316d6-f550-4643-9c78-40540b364f1f" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebt_d97f09ff-60b1-4f77-80cc-374cee72bc1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_SecuredDebt_d97f09ff-60b1-4f77-80cc-374cee72bc1b" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PercentageOfJointVentureSold_a3f135b0-d230-4f72-928a-3c304b583528" xlink:href="mac-20250630.xsd#mac_PercentageOfJointVentureSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_mac_PercentageOfJointVentureSold_a3f135b0-d230-4f72-928a-3c304b583528" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures_a06ff336-057a-4538-bcbc-eba5549dbedf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures_a06ff336-057a-4538-bcbc-eba5549dbedf" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_e1bcc416-fd2e-47ad-a6ec-81296b8ad53e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_e1bcc416-fd2e-47ad-a6ec-81296b8ad53e" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration_9d3701d8-7c23-4168-92d6-8eced831eef4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3596ac1e-3d30-4eb9-b66b-19fe796b309d" xlink:to="loc_us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration_9d3701d8-7c23-4168-92d6-8eced831eef4" xlink:type="arc" order="22"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedBalanceSheetsofUnconsolidatedJointVenturesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedBalanceSheetsofUnconsolidatedJointVenturesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedBalanceSheetsofUnconsolidatedJointVenturesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3dde99ac-daa8-4ce4-a38b-e5b7197a17ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3dde99ac-daa8-4ce4-a38b-e5b7197a17ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62fa0fb9-68b0-4e68-a7d1-d8844e87a588" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3dde99ac-daa8-4ce4-a38b-e5b7197a17ba" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62fa0fb9-68b0-4e68-a7d1-d8844e87a588" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_62fa0fb9-68b0-4e68-a7d1-d8844e87a588_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62fa0fb9-68b0-4e68-a7d1-d8844e87a588" xlink:to="loc_us-gaap_RelatedPartyDomain_62fa0fb9-68b0-4e68-a7d1-d8844e87a588_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_3da4b0bb-e254-4e50-a3c2-85f5aeef3e62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62fa0fb9-68b0-4e68-a7d1-d8844e87a588" xlink:to="loc_us-gaap_RelatedPartyDomain_3da4b0bb-e254-4e50-a3c2-85f5aeef3e62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_cf13d193-771c-40a1-8e39-8765fa854b12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_3da4b0bb-e254-4e50-a3c2-85f5aeef3e62" xlink:to="loc_us-gaap_CorporateJointVentureMember_cf13d193-771c-40a1-8e39-8765fa854b12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_52035ff9-c70f-4797-a36b-61394c1f06d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_us-gaap_AssetsAbstract_52035ff9-c70f-4797-a36b-61394c1f06d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_4f3f8e65-b1fb-4f65-a4df-1bf2ca88f937" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_52035ff9-c70f-4797-a36b-61394c1f06d9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_4f3f8e65-b1fb-4f65-a4df-1bf2ca88f937" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_fe1242c8-70da-44c7-ac12-193266e7023a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_52035ff9-c70f-4797-a36b-61394c1f06d9" xlink:to="loc_us-gaap_OtherAssets_fe1242c8-70da-44c7-ac12-193266e7023a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_970d3ae4-6104-40e3-8870-12b0887b546f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_52035ff9-c70f-4797-a36b-61394c1f06d9" xlink:to="loc_us-gaap_Assets_970d3ae4-6104-40e3-8870-12b0887b546f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebt_a1973458-77ea-4c22-96bf-73cdc0180167" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:to="loc_us-gaap_SecuredDebt_a1973458-77ea-4c22-96bf-73cdc0180167" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_8f68681e-de3e-4a96-8e10-73c0f165eba4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:to="loc_us-gaap_OtherLiabilities_8f68681e-de3e-4a96-8e10-73c0f165eba4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_8c3563aa-764d-4c5c-9fe8-8086c76e12b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:to="loc_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_8c3563aa-764d-4c5c-9fe8-8086c76e12b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapitalOtherInterests_22e28387-2cca-439b-abbb-0d6725e458cf" xlink:href="mac-20250630.xsd#mac_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapitalOtherInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:to="loc_mac_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapitalOtherInterests_22e28387-2cca-439b-abbb-0d6725e458cf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_536d2863-4ed1-44d9-a125-0a1a96951475" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_a2df196e-f27e-4f8f-ab24-b0f7d78db481" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_536d2863-4ed1-44d9-a125-0a1a96951475" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstract_5994ce43-40d0-4d18-92fb-56383763b28b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstract_5994ce43-40d0-4d18-92fb-56383763b28b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_ba2cb75f-c6b1-4d75-9cad-88f66c4d965d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_8288c354-fb68-403d-ac5a-90a00dd3edfa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstract_5994ce43-40d0-4d18-92fb-56383763b28b" xlink:to="loc_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_8288c354-fb68-403d-ac5a-90a00dd3edfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_EquityMethodInvestmentsNet_1b5c0504-01d2-4fb6-8fd0-d3f808ca1a8a" xlink:href="mac-20250630.xsd#mac_EquityMethodInvestmentsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesAbstract_5994ce43-40d0-4d18-92fb-56383763b28b" xlink:to="loc_mac_EquityMethodInvestmentsNet_1b5c0504-01d2-4fb6-8fd0-d3f808ca1a8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_0b66d2ee-93b3-4b29-b370-7384c16417c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_us-gaap_EquityMethodInvestments_0b66d2ee-93b3-4b29-b370-7384c16417c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_InvestmentsInUnconsolidatedJointVentures_fac8924d-0872-4c84-aa6f-a25463c15070" xlink:href="mac-20250630.xsd#mac_InvestmentsInUnconsolidatedJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_0ee09447-70ff-490a-999c-d07a2ba0481f" xlink:to="loc_mac_InvestmentsInUnconsolidatedJointVentures_fac8924d-0872-4c84-aa6f-a25463c15070" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_EquityMethodInvestmentsNet_f8d8df09-ae4d-47a8-9420-c4c615e52f0d" xlink:href="mac-20250630.xsd#mac_EquityMethodInvestmentsNet"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesBalanceSheetfootnotesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#InvestmentsinUnconsolidatedJointVenturesBalanceSheetfootnotesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesBalanceSheetfootnotesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7af1a5c7-f313-4d02-b21c-575fdcae8ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_f76c84a8-99a1-473a-b46f-72d827b99762" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7af1a5c7-f313-4d02-b21c-575fdcae8ac4" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_f76c84a8-99a1-473a-b46f-72d827b99762" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_41c558e5-50a7-419d-a441-143ae9536fd6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_f76c84a8-99a1-473a-b46f-72d827b99762" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_41c558e5-50a7-419d-a441-143ae9536fd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_41c558e5-50a7-419d-a441-143ae9536fd6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_41c558e5-50a7-419d-a441-143ae9536fd6" xlink:to="loc_us-gaap_RelatedPartyDomain_41c558e5-50a7-419d-a441-143ae9536fd6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ef291abf-6710-4124-ab9c-952e86625658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_41c558e5-50a7-419d-a441-143ae9536fd6" xlink:to="loc_us-gaap_RelatedPartyDomain_ef291abf-6710-4124-ab9c-952e86625658" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_02142a82-0045-4bfa-8f1d-a38b7af2899f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ef291abf-6710-4124-ab9c-952e86625658" xlink:to="loc_us-gaap_CorporateJointVentureMember_02142a82-0045-4bfa-8f1d-a38b7af2899f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity_dd13a1d3-ec31-4abb-befc-a6f93e575a96" xlink:href="mac-20250630.xsd#mac_EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7af1a5c7-f313-4d02-b21c-575fdcae8ac4" xlink:to="loc_mac_EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity_dd13a1d3-ec31-4abb-befc-a6f93e575a96" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedStatementsofOperationsofUnconsolidatedJointVenturesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedStatementsofOperationsofUnconsolidatedJointVenturesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/InvestmentsinUnconsolidatedJointVenturesScheduleofCombinedandCondensedStatementsofOperationsofUnconsolidatedJointVenturesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f7445904-266c-4dd4-b2e2-0d5428edf20c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f7445904-266c-4dd4-b2e2-0d5428edf20c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f7445904-266c-4dd4-b2e2-0d5428edf20c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f7445904-266c-4dd4-b2e2-0d5428edf20c" xlink:to="loc_us-gaap_RelatedPartyDomain_f7445904-266c-4dd4-b2e2-0d5428edf20c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_48ef6a70-ca91-432f-9601-832f0cca406b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f7445904-266c-4dd4-b2e2-0d5428edf20c" xlink:to="loc_us-gaap_RelatedPartyDomain_48ef6a70-ca91-432f-9601-832f0cca406b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_62551499-e9c6-41b0-b4c9-ec0b4184e2dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_48ef6a70-ca91-432f-9601-832f0cca406b" xlink:to="loc_us-gaap_CorporateJointVentureMember_62551499-e9c6-41b0-b4c9-ec0b4184e2dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:to="loc_srt_ProductOrServiceAxis_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58" xlink:to="loc_srt_ProductsAndServicesDomain_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d9c18831-c9cd-42f3-935f-db21baf0eb81" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_cd68c5ad-912f-4db6-a8f0-a9d4b2afff58" xlink:to="loc_srt_ProductsAndServicesDomain_d9c18831-c9cd-42f3-935f-db21baf0eb81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateOtherMember_88a23135-6019-4265-9143-0c5bf3d6d705" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_d9c18831-c9cd-42f3-935f-db21baf0eb81" xlink:to="loc_us-gaap_RealEstateOtherMember_88a23135-6019-4265-9143-0c5bf3d6d705" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_7097d7e5-e885-4d56-8d6f-7fc549839893" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_d9c18831-c9cd-42f3-935f-db21baf0eb81" xlink:to="loc_us-gaap_RealEstateMember_7097d7e5-e885-4d56-8d6f-7fc549839893" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_2df6e5ac-fe36-4a5f-bc56-260713dd8882" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:to="loc_srt_CounterpartyNameAxis_2df6e5ac-fe36-4a5f-bc56-260713dd8882" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2df6e5ac-fe36-4a5f-bc56-260713dd8882_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_2df6e5ac-fe36-4a5f-bc56-260713dd8882" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2df6e5ac-fe36-4a5f-bc56-260713dd8882_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2cc0ec0c-acc8-4ce3-9c8f-038e60548f14" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_2df6e5ac-fe36-4a5f-bc56-260713dd8882" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2cc0ec0c-acc8-4ce3-9c8f-038e60548f14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PacificPremierRetailLPMember_72311239-d885-4088-b590-3e6e2014350f" xlink:href="mac-20250630.xsd#mac_PacificPremierRetailLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2cc0ec0c-acc8-4ce3-9c8f-038e60548f14" xlink:to="loc_mac_PacificPremierRetailLPMember_72311239-d885-4088-b590-3e6e2014350f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_OtherJointVenturesMember_4fb17067-fc0c-4336-af1e-91fc10980d4f" xlink:href="mac-20250630.xsd#mac_OtherJointVenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2cc0ec0c-acc8-4ce3-9c8f-038e60548f14" xlink:to="loc_mac_OtherJointVenturesMember_4fb17067-fc0c-4336-af1e-91fc10980d4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_5de009de-15cc-424c-aacb-e7c7c66908c3" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_1adfd013-8a45-42c4-8fb4-570ec9d9f473" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_5de009de-15cc-424c-aacb-e7c7c66908c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5de009de-15cc-424c-aacb-e7c7c66908c3_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_5de009de-15cc-424c-aacb-e7c7c66908c3" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5de009de-15cc-424c-aacb-e7c7c66908c3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_a2ed089d-bf08-4438-a247-899f942ed466" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_5de009de-15cc-424c-aacb-e7c7c66908c3" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_a2ed089d-bf08-4438-a247-899f942ed466" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember_80799307-ea9c-4da4-867e-c998cfee63da" xlink:href="mac-20250630.xsd#mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_a2ed089d-bf08-4438-a247-899f942ed466" xlink:to="loc_mac_LakewoodCenterLosCerritosCenterAndWashingtonSquareRetailCenterInPhoenixArizonaMember_80799307-ea9c-4da4-867e-c998cfee63da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_fa6f13e4-8a00-4e11-8672-eeef26ed2c12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_RevenuesAbstract_fa6f13e4-8a00-4e11-8672-eeef26ed2c12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_62fbb4d4-9c90-4c21-b987-bd58964f7368" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_fa6f13e4-8a00-4e11-8672-eeef26ed2c12" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncome_62fbb4d4-9c90-4c21-b987-bd58964f7368" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ba1be0a8-fbd1-4214-b0c4-0d56c8c7e74c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_fa6f13e4-8a00-4e11-8672-eeef26ed2c12" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ba1be0a8-fbd1-4214-b0c4-0d56c8c7e74c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_20da2590-d9bb-4660-8232-193c11a4de0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_fa6f13e4-8a00-4e11-8672-eeef26ed2c12" xlink:to="loc_us-gaap_Revenues_20da2590-d9bb-4660-8232-193c11a4de0e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_59d065ec-c8c8-48f8-b72b-fcbbbf909d51" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_59d065ec-c8c8-48f8-b72b-fcbbbf909d51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_e078d17b-9c6f-4208-a4c2-0bec52260e12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:to="loc_us-gaap_OperatingLeaseInitialDirectCostExpenseOverTerm_e078d17b-9c6f-4208-a4c2-0bec52260e12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_0c926a02-01f9-4c11-bfd1-2d773de6d213" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:to="loc_us-gaap_InterestExpenseNonoperating_0c926a02-01f9-4c11-bfd1-2d773de6d213" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_cbe1aa11-8e11-4ef9-88e8-bf13082c3469" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:to="loc_us-gaap_DepreciationAndAmortization_cbe1aa11-8e11-4ef9-88e8-bf13082c3469" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_4781c98d-2f72-4803-a3f1-0b8bb57b7427" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_58223d0c-5f16-4fba-8283-3f2259c2a293" xlink:to="loc_us-gaap_CostsAndExpenses_4781c98d-2f72-4803-a3f1-0b8bb57b7427" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_a1c67161-5a73-4a6b-8860-48f838c84ad0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_a1c67161-5a73-4a6b-8860-48f838c84ad0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_719d1d13-3bcf-4e90-b3cf-c36e1d8c2913" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_OtherIncome_719d1d13-3bcf-4e90-b3cf-c36e1d8c2913" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_cd37915b-38de-47e9-8656-cad35959ee1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_ProfitLoss_cd37915b-38de-47e9-8656-cad35959ee1c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_fb1c90af-193b-46a2-b2a5-23f05e23b6d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_fb1c90af-193b-46a2-b2a5-23f05e23b6d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercentAcquired_633fc7c1-0b29-4eb6-8f05-38014c9ad4e5" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercentAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_mac_JointVentureOwnershipPercentAcquired_633fc7c1-0b29-4eb6-8f05-38014c9ad4e5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_d657ecc5-98eb-42bb-bf7f-6f159337357c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_49b5ab2e-fe82-496a-b812-dcf9ae6c2e02" xlink:to="loc_us-gaap_ImpairmentOfRealEstate_d657ecc5-98eb-42bb-bf7f-6f159337357c" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/PropertynetScheduleofComponentsofPropertyNetDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#PropertynetScheduleofComponentsofPropertyNetDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/PropertynetScheduleofComponentsofPropertyNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_42ec082c-3892-4df3-82ce-fe9a919306c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_42ec082c-3892-4df3-82ce-fe9a919306c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1afcf321-70c6-4d25-b615-d3268a3490ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_42ec082c-3892-4df3-82ce-fe9a919306c7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1afcf321-70c6-4d25-b615-d3268a3490ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1afcf321-70c6-4d25-b615-d3268a3490ec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1afcf321-70c6-4d25-b615-d3268a3490ec" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1afcf321-70c6-4d25-b615-d3268a3490ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1afcf321-70c6-4d25-b615-d3268a3490ec" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_e4bf036e-e4a7-43f5-9203-a90b3560385e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:to="loc_us-gaap_LandMember_e4bf036e-e4a7-43f5-9203-a90b3560385e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_34a734dd-4a67-4971-a81e-3c71b663f735" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_34a734dd-4a67-4971-a81e-3c71b663f735" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_0f6b93cf-cc04-4c16-9073-1362a1682da3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_0f6b93cf-cc04-4c16-9073-1362a1682da3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_e5888ba4-68a4-44e3-a25c-00c6eb2008b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a1eda153-e92a-4c0a-9052-c1c09b158371" xlink:to="loc_us-gaap_ConstructionInProgressMember_e5888ba4-68a4-44e3-a25c-00c6eb2008b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_20ec7854-3555-4729-8289-aea2626ff2b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_20ec7854-3555-4729-8289-aea2626ff2b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_21cde945-f4cc-41f8-b297-0019801c4f2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_21cde945-f4cc-41f8-b297-0019801c4f2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_278ca7b5-ff78-427e-8508-3ff32b53e444" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_278ca7b5-ff78-427e-8508-3ff32b53e444" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_69a3134d-0e24-4129-96fe-51abc9b0c14e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_69a3134d-0e24-4129-96fe-51abc9b0c14e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_9d8d3196-e907-4348-b75b-37b78cd2e2db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_adfbd6f1-61c1-4d53-accd-30c92b1b0c09" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_9d8d3196-e907-4348-b75b-37b78cd2e2db" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/PropertynetNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#PropertynetNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/PropertynetNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_ab0b1b24-82f6-4333-ac08-d98564278b33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8908fa01-5f4d-4db8-a176-d188849183d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_ab0b1b24-82f6-4333-ac08-d98564278b33" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8908fa01-5f4d-4db8-a176-d188849183d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_061f566c-55cc-476b-82a0-62dce29ab502" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8908fa01-5f4d-4db8-a176-d188849183d2" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_061f566c-55cc-476b-82a0-62dce29ab502" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_061f566c-55cc-476b-82a0-62dce29ab502_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_061f566c-55cc-476b-82a0-62dce29ab502" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_061f566c-55cc-476b-82a0-62dce29ab502_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_266f2fec-ab8c-4592-8419-30198b046d58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_061f566c-55cc-476b-82a0-62dce29ab502" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_266f2fec-ab8c-4592-8419-30198b046d58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputCapRateMember_bfa668ee-8d2a-4a95-8da1-68dfa9a4fcde" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputCapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_266f2fec-ab8c-4592-8419-30198b046d58" xlink:to="loc_us-gaap_MeasurementInputCapRateMember_bfa668ee-8d2a-4a95-8da1-68dfa9a4fcde" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_6954acea-503d-4c68-85e0-59eb52008e8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_266f2fec-ab8c-4592-8419-30198b046d58" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_6954acea-503d-4c68-85e0-59eb52008e8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MeasurementInputMarketRentsPerSquareFootMemberMember_0676efa0-71a2-4ae3-8bca-879bef630d75" xlink:href="mac-20250630.xsd#mac_MeasurementInputMarketRentsPerSquareFootMemberMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_266f2fec-ab8c-4592-8419-30198b046d58" xlink:to="loc_mac_MeasurementInputMarketRentsPerSquareFootMemberMember_0676efa0-71a2-4ae3-8bca-879bef630d75" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_eb5c7431-8df0-4f89-af6b-4865242af5b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8908fa01-5f4d-4db8-a176-d188849183d2" xlink:to="loc_us-gaap_ValuationTechniqueAxis_eb5c7431-8df0-4f89-af6b-4865242af5b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_eb5c7431-8df0-4f89-af6b-4865242af5b2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationTechniqueAxis_eb5c7431-8df0-4f89-af6b-4865242af5b2" xlink:to="loc_us-gaap_ValuationTechniqueDomain_eb5c7431-8df0-4f89-af6b-4865242af5b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_892654b9-7424-4e39-8e0d-964156b456c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationTechniqueAxis_eb5c7431-8df0-4f89-af6b-4865242af5b2" xlink:to="loc_us-gaap_ValuationTechniqueDomain_892654b9-7424-4e39-8e0d-964156b456c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeApproachValuationTechniqueMember_a98a19c1-0f3e-465d-a6bb-04dcba3ade7c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeApproachValuationTechniqueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_892654b9-7424-4e39-8e0d-964156b456c5" xlink:to="loc_us-gaap_IncomeApproachValuationTechniqueMember_a98a19c1-0f3e-465d-a6bb-04dcba3ade7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e2f44bbd-d469-41b0-b826-33337037a0aa" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8908fa01-5f4d-4db8-a176-d188849183d2" xlink:to="loc_srt_RangeAxis_e2f44bbd-d469-41b0-b826-33337037a0aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e2f44bbd-d469-41b0-b826-33337037a0aa_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e2f44bbd-d469-41b0-b826-33337037a0aa" xlink:to="loc_srt_RangeMember_e2f44bbd-d469-41b0-b826-33337037a0aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b1f660c4-4225-4d70-ac08-2f7e635490b9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e2f44bbd-d469-41b0-b826-33337037a0aa" xlink:to="loc_srt_RangeMember_b1f660c4-4225-4d70-ac08-2f7e635490b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_20fc2084-6143-43c3-b852-054d8719d2ad" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b1f660c4-4225-4d70-ac08-2f7e635490b9" xlink:to="loc_srt_MinimumMember_20fc2084-6143-43c3-b852-054d8719d2ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_dd122dea-0426-40e1-96d7-8fbdfeb0bccc" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b1f660c4-4225-4d70-ac08-2f7e635490b9" xlink:to="loc_srt_MaximumMember_dd122dea-0426-40e1-96d7-8fbdfeb0bccc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationNonproduction_68c27c3b-3a93-4a92-9869-5914062642c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationNonproduction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_ab0b1b24-82f6-4333-ac08-d98564278b33" xlink:to="loc_us-gaap_DepreciationNonproduction_68c27c3b-3a93-4a92-9869-5914062642c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRealEstateOwnedMeasurementInput_0555de35-627c-4ca1-b682-a1510dfc9ac8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherRealEstateOwnedMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_ab0b1b24-82f6-4333-ac08-d98564278b33" xlink:to="loc_us-gaap_OtherRealEstateOwnedMeasurementInput_0555de35-627c-4ca1-b682-a1510dfc9ac8" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/PropertynetScheduleofGainLossonSaleorWriteDownofAssetsDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#PropertynetScheduleofGainLossonSaleorWriteDownofAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/PropertynetScheduleofGainLossonSaleorWriteDownofAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ab2642b3-61b6-44f3-88bd-075db99be2f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ab2642b3-61b6-44f3-88bd-075db99be2f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_566773b3-1e6e-45f8-9561-48d422f86780" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ab2642b3-61b6-44f3-88bd-075db99be2f0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_566773b3-1e6e-45f8-9561-48d422f86780" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_566773b3-1e6e-45f8-9561-48d422f86780_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_566773b3-1e6e-45f8-9561-48d422f86780" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_566773b3-1e6e-45f8-9561-48d422f86780_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cef6f4f0-7976-4985-ba01-e438b4324c37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_566773b3-1e6e-45f8-9561-48d422f86780" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cef6f4f0-7976-4985-ba01-e438b4324c37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_2195faa9-a1bf-42e1-8898-770c778f3896" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cef6f4f0-7976-4985-ba01-e438b4324c37" xlink:to="loc_us-gaap_BuildingMember_2195faa9-a1bf-42e1-8898-770c778f3896" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_f5797e9a-7a72-407c-bcbd-66cab6dfd4b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cef6f4f0-7976-4985-ba01-e438b4324c37" xlink:to="loc_us-gaap_LandMember_f5797e9a-7a72-407c-bcbd-66cab6dfd4b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ChandlerFashionCenterMember_b6b5f3e0-9655-4804-95e5-3dd73be91d0c" xlink:href="mac-20250630.xsd#mac_ChandlerFashionCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_cef6f4f0-7976-4985-ba01-e438b4324c37" xlink:to="loc_mac_ChandlerFashionCenterMember_b6b5f3e0-9655-4804-95e5-3dd73be91d0c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3ecb970b-096b-4431-8195-f6eebeb26466" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ab2642b3-61b6-44f3-88bd-075db99be2f0" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3ecb970b-096b-4431-8195-f6eebeb26466" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3ecb970b-096b-4431-8195-f6eebeb26466_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3ecb970b-096b-4431-8195-f6eebeb26466" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3ecb970b-096b-4431-8195-f6eebeb26466_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_7d23f23c-7763-48f2-a3c0-f3d685b69769" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3ecb970b-096b-4431-8195-f6eebeb26466" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_7d23f23c-7763-48f2-a3c0-f3d685b69769" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_WiltonMallMember_68201136-7335-4c20-bd4d-893d524f0fc5" xlink:href="mac-20250630.xsd#mac_WiltonMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_7d23f23c-7763-48f2-a3c0-f3d685b69769" xlink:to="loc_mac_WiltonMallMember_68201136-7335-4c20-bd4d-893d524f0fc5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FairValueAdjustmentOnCertainPropertiesMember_8a6bc4ca-acbc-4909-bd52-381272e6cb72" xlink:href="mac-20250630.xsd#mac_FairValueAdjustmentOnCertainPropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_7d23f23c-7763-48f2-a3c0-f3d685b69769" xlink:to="loc_mac_FairValueAdjustmentOnCertainPropertiesMember_8a6bc4ca-acbc-4909-bd52-381272e6cb72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_TowneMallMember_6d086035-454a-4a65-bac5-96ca67d3292e" xlink:href="mac-20250630.xsd#mac_TowneMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_7d23f23c-7763-48f2-a3c0-f3d685b69769" xlink:to="loc_mac_TowneMallMember_6d086035-454a-4a65-bac5-96ca67d3292e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfProperties_d587a76d-8ba2-4476-afae-f2350f71821c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:to="loc_us-gaap_GainLossOnSaleOfProperties_d587a76d-8ba2-4476-afae-f2350f71821c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_bb38d279-6fb3-4642-88b6-b02ba0f6c562" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:to="loc_us-gaap_ImpairmentOfRealEstate_bb38d279-6fb3-4642-88b6-b02ba0f6c562" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_fcbfc10b-487b-47c4-87c9-913970077880" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_fcbfc10b-487b-47c4-87c9-913970077880" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_786edc53-52d1-4b3d-bbab-681151006403" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_44bffcbe-0aab-4d43-a4b5-27cf51a39129" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_786edc53-52d1-4b3d-bbab-681151006403" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/PropertynetScheduleofAssetsMeasuredonaNonrecurringBasisDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#PropertynetScheduleofAssetsMeasuredonaNonrecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/PropertynetScheduleofAssetsMeasuredonaNonrecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4f7ac674-d00e-4a79-857d-708690f8ffa3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_416374f9-088b-409e-b4e4-0bdde0cad416" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4f7ac674-d00e-4a79-857d-708690f8ffa3" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_416374f9-088b-409e-b4e4-0bdde0cad416" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_416374f9-088b-409e-b4e4-0bdde0cad416" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_843775e5-b447-4241-b389-0ce077faed51" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_55eb339e-5dfe-4dd5-80d5-e914c2c2bf47" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_843775e5-b447-4241-b389-0ce077faed51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_325a1d1e-119b-4c3f-b00b-0ec82206d5b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_843775e5-b447-4241-b389-0ce077faed51" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_325a1d1e-119b-4c3f-b00b-0ec82206d5b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_6c284136-eacf-4277-866e-f5c45e7d0082" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_416374f9-088b-409e-b4e4-0bdde0cad416" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_6c284136-eacf-4277-866e-f5c45e7d0082" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6c284136-eacf-4277-866e-f5c45e7d0082_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_6c284136-eacf-4277-866e-f5c45e7d0082" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6c284136-eacf-4277-866e-f5c45e7d0082_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ec314ae-8c83-436e-9efc-5885e1c3ece0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_6c284136-eacf-4277-866e-f5c45e7d0082" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ec314ae-8c83-436e-9efc-5885e1c3ece0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_a9da26d2-1c50-4575-b9e6-1603d2170b75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ec314ae-8c83-436e-9efc-5885e1c3ece0" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_a9da26d2-1c50-4575-b9e6-1603d2170b75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_3b347ad4-55d8-442f-8387-a4435d326dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ec314ae-8c83-436e-9efc-5885e1c3ece0" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_3b347ad4-55d8-442f-8387-a4435d326dc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_6e04eb2b-0f9f-482e-a40f-c0369e302903" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ec314ae-8c83-436e-9efc-5885e1c3ece0" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_6e04eb2b-0f9f-482e-a40f-c0369e302903" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_1cc4ba8a-9789-4c3a-8dbe-f2da58640663" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4f7ac674-d00e-4a79-857d-708690f8ffa3" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_1cc4ba8a-9789-4c3a-8dbe-f2da58640663" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/TenantandOtherReceivablesnetDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#TenantandOtherReceivablesnetDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/TenantandOtherReceivablesnetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_61816c91-5318-4d8a-8813-c626fbfa6296" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_cbcb1b9f-ab1d-4181-9e34-1279eec40ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_61816c91-5318-4d8a-8813-c626fbfa6296" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_cbcb1b9f-ab1d-4181-9e34-1279eec40ea4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_cbcb1b9f-ab1d-4181-9e34-1279eec40ea4" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b" xlink:to="loc_us-gaap_ReceivableTypeDomain_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_6de4ca7b-51e1-4d38-bb38-b1f3554f2fee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_b8d2a28e-6a5c-4ba2-ada2-a589a8a4ab8b" xlink:to="loc_us-gaap_ReceivableTypeDomain_6de4ca7b-51e1-4d38-bb38-b1f3554f2fee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeReceivableMember_11d23f91-a47b-41b5-8a1e-58a2bea9080e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedIncomeReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_6de4ca7b-51e1-4d38-bb38-b1f3554f2fee" xlink:to="loc_us-gaap_AccruedIncomeReceivableMember_11d23f91-a47b-41b5-8a1e-58a2bea9080e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_8b40f29e-0851-44c7-9dcf-962ce9077547" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_61816c91-5318-4d8a-8813-c626fbfa6296" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_8b40f29e-0851-44c7-9dcf-962ce9077547" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGross_893f37c8-551a-4c45-b4f3-a488eef605a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_61816c91-5318-4d8a-8813-c626fbfa6296" xlink:to="loc_us-gaap_AccountsReceivableGross_893f37c8-551a-4c45-b4f3-a488eef605a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRentReceivablesNet_8656d43e-363d-42d3-87c9-1390a6f50d6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredRentReceivablesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_61816c91-5318-4d8a-8813-c626fbfa6296" xlink:to="loc_us-gaap_DeferredRentReceivablesNet_8656d43e-363d-42d3-87c9-1390a6f50d6e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/DeferredChargesandOtherAssetsnetScheduleofDeferredChargesandOtherAssetsNetDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#DeferredChargesandOtherAssetsnetScheduleofDeferredChargesandOtherAssetsNetDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/DeferredChargesandOtherAssetsnetScheduleofDeferredChargesandOtherAssetsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2351f56d-6c01-46c5-9ccf-91e2d26290ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d5f72a88-1892-4e79-86e6-3d27bf75da3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2351f56d-6c01-46c5-9ccf-91e2d26290ac" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d5f72a88-1892-4e79-86e6-3d27bf75da3e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d5f72a88-1892-4e79-86e6-3d27bf75da3e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c667e71f-878b-4425-98b3-8f13da634693" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_5f1db44a-1dd0-496b-9b73-a5ddf3cc5a63" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c667e71f-878b-4425-98b3-8f13da634693" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAcquiredInPlaceMember_0ba15608-74c9-48d1-9356-54a2b86e0fd0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeasesAcquiredInPlaceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_c667e71f-878b-4425-98b3-8f13da634693" xlink:to="loc_us-gaap_LeasesAcquiredInPlaceMember_0ba15608-74c9-48d1-9356-54a2b86e0fd0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_66fdfe4e-e01e-4809-985a-b13fe3bcbffe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2351f56d-6c01-46c5-9ccf-91e2d26290ac" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_66fdfe4e-e01e-4809-985a-b13fe3bcbffe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_711e1c01-2b67-4d62-8405-e64753bda316" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_2351f56d-6c01-46c5-9ccf-91e2d26290ac" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_711e1c01-2b67-4d62-8405-e64753bda316" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/DeferredChargesandOtherAssetsnetScheduleofAllocatedValuesofAboveMarketLeasesandBelowMarketLeasesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#DeferredChargesandOtherAssetsnetScheduleofAllocatedValuesofAboveMarketLeasesandBelowMarketLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/DeferredChargesandOtherAssetsnetScheduleofAllocatedValuesofAboveMarketLeasesandBelowMarketLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_44da6096-3199-436b-a45f-9bef6b3248b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_1e8e4f67-4fc2-4506-a2ce-409233e550f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_44da6096-3199-436b-a45f-9bef6b3248b7" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_1e8e4f67-4fc2-4506-a2ce-409233e550f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a1501bbf-105e-4529-872f-fbc9162e4272" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_1e8e4f67-4fc2-4506-a2ce-409233e550f2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a1501bbf-105e-4529-872f-fbc9162e4272" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1501bbf-105e-4529-872f-fbc9162e4272_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a1501bbf-105e-4529-872f-fbc9162e4272" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a1501bbf-105e-4529-872f-fbc9162e4272_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cb68928a-e24e-49cd-8374-495b72061086" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a1501bbf-105e-4529-872f-fbc9162e4272" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cb68928a-e24e-49cd-8374-495b72061086" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AboveMarketLeasesMember_74c65805-f91e-4b8f-8e67-10d518179432" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AboveMarketLeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cb68928a-e24e-49cd-8374-495b72061086" xlink:to="loc_us-gaap_AboveMarketLeasesMember_74c65805-f91e-4b8f-8e67-10d518179432" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AboveMarketLeasesAbstract_2a77194e-652f-4679-9c89-9b723542c106" xlink:href="mac-20250630.xsd#mac_AboveMarketLeasesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_44da6096-3199-436b-a45f-9bef6b3248b7" xlink:to="loc_mac_AboveMarketLeasesAbstract_2a77194e-652f-4679-9c89-9b723542c106" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f0191a81-7b5b-4cf2-ae7f-04f580b47250" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_AboveMarketLeasesAbstract_2a77194e-652f-4679-9c89-9b723542c106" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_f0191a81-7b5b-4cf2-ae7f-04f580b47250" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_48388216-b504-4259-96e0-a85f07fbeaca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_AboveMarketLeasesAbstract_2a77194e-652f-4679-9c89-9b723542c106" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_48388216-b504-4259-96e0-a85f07fbeaca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_df1af545-42d1-4961-a6ea-da2420fcd7d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_AboveMarketLeasesAbstract_2a77194e-652f-4679-9c89-9b723542c106" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_df1af545-42d1-4961-a6ea-da2420fcd7d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BelowMarketLeaseAbstract_b8a4cc69-2ab5-4109-9d47-d17bbad34ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BelowMarketLeaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_44da6096-3199-436b-a45f-9bef6b3248b7" xlink:to="loc_us-gaap_BelowMarketLeaseAbstract_b8a4cc69-2ab5-4109-9d47-d17bbad34ee1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BelowMarketLeaseGross_f8650b13-a017-42e4-b0ea-79bde305d7ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BelowMarketLeaseGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BelowMarketLeaseAbstract_b8a4cc69-2ab5-4109-9d47-d17bbad34ee1" xlink:to="loc_us-gaap_BelowMarketLeaseGross_f8650b13-a017-42e4-b0ea-79bde305d7ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BelowMarketLeaseAccumulatedAmortization_84dd89a0-7cb1-47fd-9ba6-6d1589ba76f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BelowMarketLeaseAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BelowMarketLeaseAbstract_b8a4cc69-2ab5-4109-9d47-d17bbad34ee1" xlink:to="loc_us-gaap_BelowMarketLeaseAccumulatedAmortization_84dd89a0-7cb1-47fd-9ba6-6d1589ba76f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BelowMarketLeaseNet_746c72c4-eb56-4ae4-9fea-212946484fa7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BelowMarketLeaseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BelowMarketLeaseAbstract_b8a4cc69-2ab5-4109-9d47-d17bbad34ee1" xlink:to="loc_us-gaap_BelowMarketLeaseNet_746c72c4-eb56-4ae4-9fea-212946484fa7" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/MortgageNotesPayableScheduleofMortgageNotesPayableDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#MortgageNotesPayableScheduleofMortgageNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/MortgageNotesPayableScheduleofMortgageNotesPayableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_7aff45bf-8597-4543-a86d-9da2a8901bcd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_9dcaedd8-f2fa-4d37-91f2-59270de6441e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7aff45bf-8597-4543-a86d-9da2a8901bcd" xlink:to="loc_us-gaap_DebtInstrumentTable_9dcaedd8-f2fa-4d37-91f2-59270de6441e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_607939e7-42de-405e-8297-9363f4037be4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9dcaedd8-f2fa-4d37-91f2-59270de6441e" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_607939e7-42de-405e-8297-9363f4037be4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_607939e7-42de-405e-8297-9363f4037be4_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_607939e7-42de-405e-8297-9363f4037be4" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_607939e7-42de-405e-8297-9363f4037be4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_607939e7-42de-405e-8297-9363f4037be4" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_960349e5-862d-4939-bc4e-66a8d2bff29b" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_ArrowheadTowneCenterMember_960349e5-862d-4939-bc4e-66a8d2bff29b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DanburyFairMallMortgageMember_8d6b523c-3b5a-4a87-afa6-7fb1e273dc70" xlink:href="mac-20250630.xsd#mac_DanburyFairMallMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_DanburyFairMallMortgageMember_8d6b523c-3b5a-4a87-afa6-7fb1e273dc70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FashionOutletsOfChicagoMortgageMember_9f4cd21e-2450-451e-9521-370285d7845a" xlink:href="mac-20250630.xsd#mac_FashionOutletsOfChicagoMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_FashionOutletsOfChicagoMortgageMember_9f4cd21e-2450-451e-9521-370285d7845a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FashionOutletsAtNiagaraMortgageMember_42503c0d-4102-4943-b4e6-b70968734477" xlink:href="mac-20250630.xsd#mac_FashionOutletsAtNiagaraMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_FashionOutletsAtNiagaraMortgageMember_42503c0d-4102-4943-b4e6-b70968734477" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FreeholdRacewayMallMortgageMember_eb8d8205-dbb3-4421-928d-75330bbc4872" xlink:href="mac-20250630.xsd#mac_FreeholdRacewayMallMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_FreeholdRacewayMallMortgageMember_eb8d8205-dbb3-4421-928d-75330bbc4872" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FresnoFashionFairMember_a90e07ec-5df5-412c-add1-38fda7ed8eac" xlink:href="mac-20250630.xsd#mac_FresnoFashionFairMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_FresnoFashionFairMember_a90e07ec-5df5-412c-add1-38fda7ed8eac" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_GreenAcresMallMember_4b793d3c-de49-4867-b3ac-5e14fb4bd713" xlink:href="mac-20250630.xsd#mac_GreenAcresMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_GreenAcresMallMember_4b793d3c-de49-4867-b3ac-5e14fb4bd713" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_KingsPlazaMortgageMember_6edd6239-c8d1-488b-8134-d4eb8d70b48c" xlink:href="mac-20250630.xsd#mac_KingsPlazaMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_KingsPlazaMortgageMember_6edd6239-c8d1-488b-8134-d4eb8d70b48c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LakewoodCenterMember_d7a5dcba-e447-4bb0-8548-e0409aa52839" xlink:href="mac-20250630.xsd#mac_LakewoodCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_LakewoodCenterMember_d7a5dcba-e447-4bb0-8548-e0409aa52839" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LosCerritosCenterMember_66ee94cc-9e07-48c9-8dc1-5aeb3e504ee3" xlink:href="mac-20250630.xsd#mac_LosCerritosCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_LosCerritosCenterMember_66ee94cc-9e07-48c9-8dc1-5aeb3e504ee3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PacificViewMortgageMember_106d1433-277b-433c-95cb-c9371454500a" xlink:href="mac-20250630.xsd#mac_PacificViewMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_PacificViewMortgageMember_106d1433-277b-433c-95cb-c9371454500a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_QueensCenterMember_846ad16e-5f23-4d94-a70d-f7b2612a7018" xlink:href="mac-20250630.xsd#mac_QueensCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_QueensCenterMember_846ad16e-5f23-4d94-a70d-f7b2612a7018" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SantaMonicaPlaceMortgageMember_cb10e099-f255-4292-856e-8a7963531498" xlink:href="mac-20250630.xsd#mac_SantaMonicaPlaceMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_SantaMonicaPlaceMortgageMember_cb10e099-f255-4292-856e-8a7963531498" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SanTanVillageRegionalCenterMortgageMember_4452ed20-790f-4552-9a1f-8181f0e4d680" xlink:href="mac-20250630.xsd#mac_SanTanVillageRegionalCenterMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_SanTanVillageRegionalCenterMortgageMember_4452ed20-790f-4552-9a1f-8181f0e4d680" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_a8470de2-35c3-4462-b3a6-5865464e5650" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_SouthPlainsMallMember_a8470de2-35c3-4462-b3a6-5865464e5650" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MallOfVictorValleyMortgageMember_37df4757-176b-4280-87bf-73a25b62d9d3" xlink:href="mac-20250630.xsd#mac_MallOfVictorValleyMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_MallOfVictorValleyMortgageMember_37df4757-176b-4280-87bf-73a25b62d9d3" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_VintageFaireMallMortgageMember_767063b1-354e-446d-8225-08e72c98e595" xlink:href="mac-20250630.xsd#mac_VintageFaireMallMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_VintageFaireMallMortgageMember_767063b1-354e-446d-8225-08e72c98e595" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_WashingtonSquareMember_99c42464-3d71-4f6a-9f2b-ca281b8be450" xlink:href="mac-20250630.xsd#mac_WashingtonSquareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_80de7b27-ae5c-49eb-a4d1-7f7311c44e6b" xlink:to="loc_mac_WashingtonSquareMember_99c42464-3d71-4f6a-9f2b-ca281b8be450" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_e9ab06aa-ba96-4fec-b003-020b2487bae8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7aff45bf-8597-4543-a86d-9da2a8901bcd" xlink:to="loc_us-gaap_LongTermDebt_e9ab06aa-ba96-4fec-b003-020b2487bae8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_a0264e5a-d077-4497-9e13-3e17bc83a1bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7aff45bf-8597-4543-a86d-9da2a8901bcd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_a0264e5a-d077-4497-9e13-3e17bc83a1bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPayment_db9953d6-2aa3-46f5-b271-17c595e7e202" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentPeriodicPayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7aff45bf-8597-4543-a86d-9da2a8901bcd" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPayment_db9953d6-2aa3-46f5-b271-17c595e7e202" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/MortgageNotesPayableFootnotesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#MortgageNotesPayableFootnotesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/MortgageNotesPayableFootnotesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_3078b6b3-f726-4057-bb3e-9f04b1d72392" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:to="loc_us-gaap_AssetAcquisitionAxis_3078b6b3-f726-4057-bb3e-9f04b1d72392" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_3078b6b3-f726-4057-bb3e-9f04b1d72392_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_3078b6b3-f726-4057-bb3e-9f04b1d72392" xlink:to="loc_us-gaap_AssetAcquisitionDomain_3078b6b3-f726-4057-bb3e-9f04b1d72392_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_3078b6b3-f726-4057-bb3e-9f04b1d72392" xlink:to="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_40dd25fb-307d-427d-be8d-56fae3e09bb5" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:to="loc_mac_ArrowheadTowneCenterMember_40dd25fb-307d-427d-be8d-56fae3e09bb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LakewoodCenterMember_239b829e-a7e1-4348-bdf1-dc79f958e31a" xlink:href="mac-20250630.xsd#mac_LakewoodCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:to="loc_mac_LakewoodCenterMember_239b829e-a7e1-4348-bdf1-dc79f958e31a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_ca918297-4a91-4e05-bd32-ea28284a0ae7" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:to="loc_mac_SouthPlainsMallMember_ca918297-4a91-4e05-bd32-ea28284a0ae7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LosCerritosCenterMember_6ca75aa2-c9c1-4931-885b-ab1d5882138a" xlink:href="mac-20250630.xsd#mac_LosCerritosCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_144c91eb-af76-4174-982d-22f8bc6b89fd" xlink:to="loc_mac_LosCerritosCenterMember_6ca75aa2-c9c1-4931-885b-ab1d5882138a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_823109dc-ad38-408b-9252-ae845576ecbb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_823109dc-ad38-408b-9252-ae845576ecbb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_823109dc-ad38-408b-9252-ae845576ecbb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_823109dc-ad38-408b-9252-ae845576ecbb" xlink:to="loc_us-gaap_RelatedPartyDomain_823109dc-ad38-408b-9252-ae845576ecbb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_0f9943cc-d6c1-46ad-a5a7-023427baeebe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_823109dc-ad38-408b-9252-ae845576ecbb" xlink:to="loc_us-gaap_RelatedPartyDomain_0f9943cc-d6c1-46ad-a5a7-023427baeebe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_3d470b81-2530-48f1-bf92-37f08ed2e3e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_0f9943cc-d6c1-46ad-a5a7-023427baeebe" xlink:to="loc_us-gaap_CorporateJointVentureMember_3d470b81-2530-48f1-bf92-37f08ed2e3e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_ef7480f9-8278-4658-87fa-a8810ff60ecb" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:to="loc_srt_CounterpartyNameAxis_ef7480f9-8278-4658-87fa-a8810ff60ecb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ef7480f9-8278-4658-87fa-a8810ff60ecb_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_ef7480f9-8278-4658-87fa-a8810ff60ecb" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_ef7480f9-8278-4658-87fa-a8810ff60ecb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1541975a-e571-430e-92bc-e15971e08bd2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_ef7480f9-8278-4658-87fa-a8810ff60ecb" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1541975a-e571-430e-92bc-e15971e08bd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ThirdPartyMember_d3596485-cb69-4880-9a73-5af5044cc430" xlink:href="mac-20250630.xsd#mac_ThirdPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_1541975a-e571-430e-92bc-e15971e08bd2" xlink:to="loc_mac_ThirdPartyMember_d3596485-cb69-4880-9a73-5af5044cc430" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c3141dc2-eda1-4df0-9bf6-5df5a5ff18f0" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e212bb77-1ee1-40a4-a8d4-ed290e0b8f7f" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_7dbf25d2-8528-428e-8c5b-6b5d9de0995b" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_ArrowheadTowneCenterMember_7dbf25d2-8528-428e-8c5b-6b5d9de0995b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LakewoodCenterMember_87a550dd-1230-4cd4-abfb-7ad557f679cb" xlink:href="mac-20250630.xsd#mac_LakewoodCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_LakewoodCenterMember_87a550dd-1230-4cd4-abfb-7ad557f679cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LosCerritosCenterMember_adceaaa6-53e4-4612-b750-cabeef80fef7" xlink:href="mac-20250630.xsd#mac_LosCerritosCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_LosCerritosCenterMember_adceaaa6-53e4-4612-b750-cabeef80fef7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_f6e4d3c4-0b5e-4f66-b49a-18b1d00da256" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_SouthPlainsMallMember_f6e4d3c4-0b5e-4f66-b49a-18b1d00da256" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DanburyFairMallMember_ba190e9b-dbfd-4a3e-8b38-4898d50cfcd3" xlink:href="mac-20250630.xsd#mac_DanburyFairMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_DanburyFairMallMember_ba190e9b-dbfd-4a3e-8b38-4898d50cfcd3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FashionOutletsAtNiagaraMortgageMember_ebcf1f22-3e05-40d4-ad3f-179064c17cf0" xlink:href="mac-20250630.xsd#mac_FashionOutletsAtNiagaraMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_FashionOutletsAtNiagaraMortgageMember_ebcf1f22-3e05-40d4-ad3f-179064c17cf0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_QueensCenterMember_3e14e340-9307-4dae-9d99-27bb84d39f52" xlink:href="mac-20250630.xsd#mac_QueensCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_QueensCenterMember_3e14e340-9307-4dae-9d99-27bb84d39f52" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SantaMonicaPlaceMember_0252b5a6-590c-40d5-a98d-748a49f3acec" xlink:href="mac-20250630.xsd#mac_SantaMonicaPlaceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_SantaMonicaPlaceMember_0252b5a6-590c-40d5-a98d-748a49f3acec" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_WashingtonSquareMember_fe83c37e-c729-4f38-94dc-9c7781ea0624" xlink:href="mac-20250630.xsd#mac_WashingtonSquareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_0e93d974-23db-4f1f-b591-317868b43565" xlink:to="loc_mac_WashingtonSquareMember_fe83c37e-c729-4f38-94dc-9c7781ea0624" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_deedb23c-376f-4bba-81aa-83ab5209684e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_deedb23c-376f-4bba-81aa-83ab5209684e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_59fc983d-91d7-4434-8433-dfaf6872ae59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_59fc983d-91d7-4434-8433-dfaf6872ae59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercentAcquired_44cada09-2036-446a-a5a1-c93d91a72ae2" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercentAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_mac_JointVentureOwnershipPercentAcquired_44cada09-2036-446a-a5a1-c93d91a72ae2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionPercentageOfSharesOwned_0550594c-a1a9-43e3-9540-14e646ee184d" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionPercentageOfSharesOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_mac_AssetAcquisitionPercentageOfSharesOwned_0550594c-a1a9-43e3-9540-14e646ee184d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_1af9caa7-a59f-476e-9c4e-d9e3d43effdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_1af9caa7-a59f-476e-9c4e-d9e3d43effdd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_310f7ebb-ee5a-425b-bd50-d02676048343" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_310f7ebb-ee5a-425b-bd50-d02676048343" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentExtensionTerm_f38ce08b-49a7-4285-9937-77c11cc81451" xlink:href="mac-20250630.xsd#mac_DebtInstrumentExtensionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_mac_DebtInstrumentExtensionTerm_f38ce08b-49a7-4285-9937-77c11cc81451" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4438fa50-775b-486c-9836-b67fae2ffcf1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4438fa50-775b-486c-9836-b67fae2ffcf1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_6db9cc7e-c55d-4aaa-9aab-7d786d1daa0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_6db9cc7e-c55d-4aaa-9aab-7d786d1daa0c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_b586d43c-b60a-44b0-b73b-9a6689a487fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_us-gaap_DebtInstrumentTerm_b586d43c-b60a-44b0-b73b-9a6689a487fe" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentDebtDefaultInterestRate_88664168-04c4-48e7-be5d-838f353f20d5" xlink:href="mac-20250630.xsd#mac_DebtInstrumentDebtDefaultInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b79ce0c9-c714-4869-9cba-68eacd561f2c" xlink:to="loc_mac_DebtInstrumentDebtDefaultInterestRate_88664168-04c4-48e7-be5d-838f353f20d5" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/BankandOtherNotesPayableDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#BankandOtherNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/BankandOtherNotesPayableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_712a0a26-8e1c-43bf-8d18-d28db7f4c209" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_712a0a26-8e1c-43bf-8d18-d28db7f4c209" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_712a0a26-8e1c-43bf-8d18-d28db7f4c209_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_712a0a26-8e1c-43bf-8d18-d28db7f4c209" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_712a0a26-8e1c-43bf-8d18-d28db7f4c209_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ec2e2303-385c-48ff-82c5-4e9ed8896c87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_712a0a26-8e1c-43bf-8d18-d28db7f4c209" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ec2e2303-385c-48ff-82c5-4e9ed8896c87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_cafa09c9-fb8c-4713-9baa-54d1fe06891d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_ec2e2303-385c-48ff-82c5-4e9ed8896c87" xlink:to="loc_us-gaap_LineOfCreditMember_cafa09c9-fb8c-4713-9baa-54d1fe06891d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_ba3adbfd-185d-4140-a68e-1ee89b00be31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_us-gaap_DebtInstrumentAxis_ba3adbfd-185d-4140-a68e-1ee89b00be31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ba3adbfd-185d-4140-a68e-1ee89b00be31_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_ba3adbfd-185d-4140-a68e-1ee89b00be31" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ba3adbfd-185d-4140-a68e-1ee89b00be31_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c840746d-74bd-4eb2-bcff-4cf6ff54aba8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_ba3adbfd-185d-4140-a68e-1ee89b00be31" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c840746d-74bd-4eb2-bcff-4cf6ff54aba8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_RevolvingLoanFacilityMaturesOnFebruary12027Member_0c460df6-9342-42c1-9d82-cb7ed7533f8d" xlink:href="mac-20250630.xsd#mac_RevolvingLoanFacilityMaturesOnFebruary12027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c840746d-74bd-4eb2-bcff-4cf6ff54aba8" xlink:to="loc_mac_RevolvingLoanFacilityMaturesOnFebruary12027Member_0c460df6-9342-42c1-9d82-cb7ed7533f8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_3480a395-6df4-4c36-b21b-e037084e7754" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_us-gaap_CreditFacilityAxis_3480a395-6df4-4c36-b21b-e037084e7754" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3480a395-6df4-4c36-b21b-e037084e7754_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_3480a395-6df4-4c36-b21b-e037084e7754" xlink:to="loc_us-gaap_CreditFacilityDomain_3480a395-6df4-4c36-b21b-e037084e7754_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_5ce0a686-4730-40e7-83d2-2cd6a9a155a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_3480a395-6df4-4c36-b21b-e037084e7754" xlink:to="loc_us-gaap_CreditFacilityDomain_5ce0a686-4730-40e7-83d2-2cd6a9a155a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_e4a2f0f0-c8a7-4b7f-8bae-6b93d90c62ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5ce0a686-4730-40e7-83d2-2cd6a9a155a8" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_e4a2f0f0-c8a7-4b7f-8bae-6b93d90c62ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_3fcb8385-9ca8-4a4b-bb52-e713f13d0001" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5ce0a686-4730-40e7-83d2-2cd6a9a155a8" xlink:to="loc_us-gaap_LineOfCreditMember_3fcb8385-9ca8-4a4b-bb52-e713f13d0001" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_11b395e8-48cc-423b-8899-ad2304523a1d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_srt_RangeAxis_11b395e8-48cc-423b-8899-ad2304523a1d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_11b395e8-48cc-423b-8899-ad2304523a1d_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_11b395e8-48cc-423b-8899-ad2304523a1d" xlink:to="loc_srt_RangeMember_11b395e8-48cc-423b-8899-ad2304523a1d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9adfe066-da7f-43c1-8d53-0f3a5ccb286d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_11b395e8-48cc-423b-8899-ad2304523a1d" xlink:to="loc_srt_RangeMember_9adfe066-da7f-43c1-8d53-0f3a5ccb286d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_4f43f738-6265-43e5-a875-415bc60798a5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9adfe066-da7f-43c1-8d53-0f3a5ccb286d" xlink:to="loc_srt_MinimumMember_4f43f738-6265-43e5-a875-415bc60798a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4f0a5758-01a9-4ac8-9140-ef2d3d5e05aa" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9adfe066-da7f-43c1-8d53-0f3a5ccb286d" xlink:to="loc_srt_MaximumMember_4f0a5758-01a9-4ac8-9140-ef2d3d5e05aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9151a908-7668-423e-aded-b0aa62ce9bb3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8a49cfe5-bdf7-41a6-bf58-5bcf37d4d739" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9151a908-7668-423e-aded-b0aa62ce9bb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_6177e285-5024-4ccf-ba6a-e17c7fcbdaac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9151a908-7668-423e-aded-b0aa62ce9bb3" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_6177e285-5024-4ccf-ba6a-e17c7fcbdaac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_39878a09-20ae-4364-b2b8-99fbdadb3ce4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_95d9bfd4-b9ae-4f1e-a7fa-e1d906e49ecc" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_39878a09-20ae-4364-b2b8-99fbdadb3ce4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CrabtreeMallFinancingMember_66ea2af4-69a6-473d-8df5-3115b8623f3e" xlink:href="mac-20250630.xsd#mac_CrabtreeMallFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_39878a09-20ae-4364-b2b8-99fbdadb3ce4" xlink:to="loc_mac_CrabtreeMallFinancingMember_66ea2af4-69a6-473d-8df5-3115b8623f3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_94049e7e-cb76-419e-abd9-73cd9d5e74bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_5ef24021-be65-438a-979d-3d67049d94cc" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_94049e7e-cb76-419e-abd9-73cd9d5e74bc" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_94049e7e-cb76-419e-abd9-73cd9d5e74bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_94049e7e-cb76-419e-abd9-73cd9d5e74bc" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_94049e7e-cb76-419e-abd9-73cd9d5e74bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_acc7c8dc-34e6-4585-9dec-eae86d0a71aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_94049e7e-cb76-419e-abd9-73cd9d5e74bc" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_acc7c8dc-34e6-4585-9dec-eae86d0a71aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_e097425c-2af1-4f15-bbba-63b7862cb1ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_acc7c8dc-34e6-4585-9dec-eae86d0a71aa" xlink:to="loc_us-gaap_SubsequentEventMember_e097425c-2af1-4f15-bbba-63b7862cb1ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_771816f0-d9ab-446d-9d81-3af08f4edb2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_771816f0-d9ab-446d-9d81-3af08f4edb2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentExtensionTerm_4395a4cc-d58e-4a7f-987b-4053d86b70b2" xlink:href="mac-20250630.xsd#mac_DebtInstrumentExtensionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_mac_DebtInstrumentExtensionTerm_4395a4cc-d58e-4a7f-987b-4053d86b70b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_1d797c86-8538-47da-ad54-378c8b42ab6a" xlink:href="mac-20250630.xsd#mac_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_mac_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption_1d797c86-8538-47da-ad54-378c8b42ab6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentLeverageRatioRequirement_a45f3ca8-2063-41a8-b703-487123d70156" xlink:href="mac-20250630.xsd#mac_DebtInstrumentLeverageRatioRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_mac_DebtInstrumentLeverageRatioRequirement_a45f3ca8-2063-41a8-b703-487123d70156" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentAdjustmentIncreaseInterest_62fe3372-0419-46e4-9a59-ffea15f5a729" xlink:href="mac-20250630.xsd#mac_DebtInstrumentAdjustmentIncreaseInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_mac_DebtInstrumentAdjustmentIncreaseInterest_62fe3372-0419-46e4-9a59-ffea15f5a729" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e75cae57-e49b-4093-a630-440b28566cca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e75cae57-e49b-4093-a630-440b28566cca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_1b038462-9969-496a-b4f9-a3646051b3f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_LineOfCredit_1b038462-9969-496a-b4f9-a3646051b3f7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_46faea98-9a2e-496f-8a02-2cd9dd5dbc63" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_46faea98-9a2e-496f-8a02-2cd9dd5dbc63" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_c4b9560c-fbe7-42cb-98a2-a2dcad84f7c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_c4b9560c-fbe7-42cb-98a2-a2dcad84f7c2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3c69e699-5cd3-4229-8cd9-ba9aac484c34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3c69e699-5cd3-4229-8cd9-ba9aac484c34" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_171cdf84-3d0a-4fea-860d-6f3bcb81f3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_DebtInstrumentFairValue_171cdf84-3d0a-4fea-860d-6f3bcb81f3d6" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_af55a0b4-48c4-4106-9629-85ddc58acab6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_06f26f99-86f6-46e7-9c45-c951d9aba521" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_af55a0b4-48c4-4106-9629-85ddc58acab6" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/FinancingArrangementNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#FinancingArrangementNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/FinancingArrangementNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:href="mac-20250630.xsd#mac_ScheduleOfJointVenturesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:href="mac-20250630.xsd#mac_ScheduleOfJointVenturesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_ea43198e-0a27-4051-9cf3-9fc2be4a7613" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_1d0cc0a7-cc93-4ed9-aafd-9b84f95c2359" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_ea43198e-0a27-4051-9cf3-9fc2be4a7613" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FinancingArrangementMember_3add648f-369f-43f7-97a8-e4aa33c45bb0" xlink:href="mac-20250630.xsd#mac_FinancingArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_ea43198e-0a27-4051-9cf3-9fc2be4a7613" xlink:to="loc_mac_FinancingArrangementMember_3add648f-369f-43f7-97a8-e4aa33c45bb0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_677eccc9-c8ab-4500-bf69-925f2ea99b85" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_677eccc9-c8ab-4500-bf69-925f2ea99b85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_677eccc9-c8ab-4500-bf69-925f2ea99b85_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_677eccc9-c8ab-4500-bf69-925f2ea99b85" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_677eccc9-c8ab-4500-bf69-925f2ea99b85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_921ce0b3-a89c-44c6-9738-0d9464ec4c84" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_677eccc9-c8ab-4500-bf69-925f2ea99b85" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_921ce0b3-a89c-44c6-9738-0d9464ec4c84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ChandlerFashionCenterMember_55d198ca-9e88-4df4-b40b-3cf4c690546b" xlink:href="mac-20250630.xsd#mac_ChandlerFashionCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_921ce0b3-a89c-44c6-9738-0d9464ec4c84" xlink:to="loc_mac_ChandlerFashionCenterMember_55d198ca-9e88-4df4-b40b-3cf4c690546b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ChandlerFashionCenterAndFreeholdRacewayMallMember_ebbf7db0-ff14-4217-b33d-e148d29926fb" xlink:href="mac-20250630.xsd#mac_ChandlerFashionCenterAndFreeholdRacewayMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_921ce0b3-a89c-44c6-9738-0d9464ec4c84" xlink:to="loc_mac_ChandlerFashionCenterAndFreeholdRacewayMallMember_ebbf7db0-ff14-4217-b33d-e148d29926fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FreeholdRacewayMallMember_519f4cb1-3119-4552-b446-b949f18c442e" xlink:href="mac-20250630.xsd#mac_FreeholdRacewayMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_921ce0b3-a89c-44c6-9738-0d9464ec4c84" xlink:to="loc_mac_FreeholdRacewayMallMember_519f4cb1-3119-4552-b446-b949f18c442e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e04f9521-4012-4169-b9dd-76b4b9fd2113" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e04f9521-4012-4169-b9dd-76b4b9fd2113" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e04f9521-4012-4169-b9dd-76b4b9fd2113_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e04f9521-4012-4169-b9dd-76b4b9fd2113" xlink:to="loc_us-gaap_RelatedPartyDomain_e04f9521-4012-4169-b9dd-76b4b9fd2113_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_63fa385c-8b19-4ca9-844a-e16e399bab75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e04f9521-4012-4169-b9dd-76b4b9fd2113" xlink:to="loc_us-gaap_RelatedPartyDomain_63fa385c-8b19-4ca9-844a-e16e399bab75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_52d3bb19-9ef2-4e3d-bf9a-469f4f2de784" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_63fa385c-8b19-4ca9-844a-e16e399bab75" xlink:to="loc_us-gaap_CorporateJointVentureMember_52d3bb19-9ef2-4e3d-bf9a-469f4f2de784" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_c91df0da-9bee-4a05-8ecd-93d9685a2181" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_c91df0da-9bee-4a05-8ecd-93d9685a2181" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c91df0da-9bee-4a05-8ecd-93d9685a2181_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c91df0da-9bee-4a05-8ecd-93d9685a2181" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c91df0da-9bee-4a05-8ecd-93d9685a2181_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b2afd30f-5cc6-454b-b813-64478d591625" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_c91df0da-9bee-4a05-8ecd-93d9685a2181" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b2afd30f-5cc6-454b-b813-64478d591625" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FreeholdRacewayMallMember_209dc3e4-8dfe-4f89-b9ef-56de58ea8449" xlink:href="mac-20250630.xsd#mac_FreeholdRacewayMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b2afd30f-5cc6-454b-b813-64478d591625" xlink:to="loc_mac_FreeholdRacewayMallMember_209dc3e4-8dfe-4f89-b9ef-56de58ea8449" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_003556f5-804f-41d3-bf8a-b6f3550301b1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_srt_RangeAxis_003556f5-804f-41d3-bf8a-b6f3550301b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_003556f5-804f-41d3-bf8a-b6f3550301b1_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_003556f5-804f-41d3-bf8a-b6f3550301b1" xlink:to="loc_srt_RangeMember_003556f5-804f-41d3-bf8a-b6f3550301b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_506a1136-b74d-4a8a-be6f-6dc19987a40a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_003556f5-804f-41d3-bf8a-b6f3550301b1" xlink:to="loc_srt_RangeMember_506a1136-b74d-4a8a-be6f-6dc19987a40a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_4c285160-daa6-400a-9998-0b95f19bf3bd" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_506a1136-b74d-4a8a-be6f-6dc19987a40a" xlink:to="loc_srt_MinimumMember_4c285160-daa6-400a-9998-0b95f19bf3bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d96f29d4-94d3-4d29-87c0-e0bd981d6506" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_506a1136-b74d-4a8a-be6f-6dc19987a40a" xlink:to="loc_srt_MaximumMember_d96f29d4-94d3-4d29-87c0-e0bd981d6506" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_6485143c-e557-429b-86f8-37c711e9c94d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_7d068c1a-a09b-493b-b1ac-31744ff35d2d" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_6485143c-e557-429b-86f8-37c711e9c94d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_6485143c-e557-429b-86f8-37c711e9c94d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_6485143c-e557-429b-86f8-37c711e9c94d" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_6485143c-e557-429b-86f8-37c711e9c94d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_587a66f3-22af-484e-86e8-2642e90d6ba1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_6485143c-e557-429b-86f8-37c711e9c94d" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_587a66f3-22af-484e-86e8-2642e90d6ba1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MeasurementInputTerminalCapitalizationRateMember_2eb56b1a-e5f3-4c19-83de-48b1411d3df5" xlink:href="mac-20250630.xsd#mac_MeasurementInputTerminalCapitalizationRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_587a66f3-22af-484e-86e8-2642e90d6ba1" xlink:to="loc_mac_MeasurementInputTerminalCapitalizationRateMember_2eb56b1a-e5f3-4c19-83de-48b1411d3df5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_262953d7-0153-4ce6-aaf9-e0d056baa83e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_587a66f3-22af-484e-86e8-2642e90d6ba1" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_262953d7-0153-4ce6-aaf9-e0d056baa83e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MeasurementInputMarketsRentsPerSquareFootMember_3fd47c24-37fa-43e0-83c7-37f44cb493e6" xlink:href="mac-20250630.xsd#mac_MeasurementInputMarketsRentsPerSquareFootMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_587a66f3-22af-484e-86e8-2642e90d6ba1" xlink:to="loc_mac_MeasurementInputMarketsRentsPerSquareFootMember_3fd47c24-37fa-43e0-83c7-37f44cb493e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercentageSold_07604ce9-7698-4ef7-87f3-926f39745f1a" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercentageSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_mac_JointVentureOwnershipPercentageSold_07604ce9-7698-4ef7-87f3-926f39745f1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_0346eb21-e819-478e-a27c-a32c6354b552" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_0346eb21-e819-478e-a27c-a32c6354b552" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercent_a3a75bd9-37d4-4b32-9588-899182f1424a" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_mac_JointVentureOwnershipPercent_a3a75bd9-37d4-4b32-9588-899182f1424a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_d2187dc5-1596-4ae3-9e78-2a19ec8392ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_d2187dc5-1596-4ae3-9e78-2a19ec8392ea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FinancingArrangementObligation_9cf919e8-cecf-4bb0-b5a8-b9e0de28bd19" xlink:href="mac-20250630.xsd#mac_FinancingArrangementObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_mac_FinancingArrangementObligation_9cf919e8-cecf-4bb0-b5a8-b9e0de28bd19" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentMeasurementInput_4068edcd-addf-4c06-8be5-aad5b5348a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_901cd0fa-4fc0-497c-b95b-0679538eb9d0" xlink:to="loc_us-gaap_DebtInstrumentMeasurementInput_4068edcd-addf-4c06-8be5-aad5b5348a1d" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/FinancingArrangementScheduleofFinancingArrangementActivityDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#FinancingArrangementScheduleofFinancingArrangementActivityDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/FinancingArrangementScheduleofFinancingArrangementActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:href="mac-20250630.xsd#mac_ScheduleOfJointVenturesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ScheduleOfJointVenturesTable_e9ba2308-6154-4286-ae93-c30681e5a173" xlink:href="mac-20250630.xsd#mac_ScheduleOfJointVenturesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:to="loc_mac_ScheduleOfJointVenturesTable_e9ba2308-6154-4286-ae93-c30681e5a173" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_80e89158-01fa-4ec1-b4de-58e10cb2e410" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_e9ba2308-6154-4286-ae93-c30681e5a173" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_80e89158-01fa-4ec1-b4de-58e10cb2e410" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_80e89158-01fa-4ec1-b4de-58e10cb2e410_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_80e89158-01fa-4ec1-b4de-58e10cb2e410" xlink:to="loc_us-gaap_RelatedPartyDomain_80e89158-01fa-4ec1-b4de-58e10cb2e410_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_5334ab44-7162-4497-bdcb-bf73b8103f9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_80e89158-01fa-4ec1-b4de-58e10cb2e410" xlink:to="loc_us-gaap_RelatedPartyDomain_5334ab44-7162-4497-bdcb-bf73b8103f9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_f6d6c562-6196-410f-8d2c-1c2c88818284" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5334ab44-7162-4497-bdcb-bf73b8103f9e" xlink:to="loc_us-gaap_RelatedPartyMember_f6d6c562-6196-410f-8d2c-1c2c88818284" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_eaeb989f-7345-4122-9c49-c578cfaeb599" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mac_ScheduleOfJointVenturesTable_e9ba2308-6154-4286-ae93-c30681e5a173" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_eaeb989f-7345-4122-9c49-c578cfaeb599" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_eaeb989f-7345-4122-9c49-c578cfaeb599_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_eaeb989f-7345-4122-9c49-c578cfaeb599" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_eaeb989f-7345-4122-9c49-c578cfaeb599_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_a3e7677f-fad1-4445-b277-aa27df7e362d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_eaeb989f-7345-4122-9c49-c578cfaeb599" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_a3e7677f-fad1-4445-b277-aa27df7e362d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FinancingArrangementMember_9e079619-29ae-42fb-b6d5-8cbe49d8b2d9" xlink:href="mac-20250630.xsd#mac_FinancingArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_a3e7677f-fad1-4445-b277-aa27df7e362d" xlink:to="loc_mac_FinancingArrangementMember_9e079619-29ae-42fb-b6d5-8cbe49d8b2d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_IncomeLossFromJointVenture_976cb729-e7c5-4d17-aebb-2510195e2741" xlink:href="mac-20250630.xsd#mac_IncomeLossFromJointVenture"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:to="loc_mac_IncomeLossFromJointVenture_976cb729-e7c5-4d17-aebb-2510195e2741" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureDistributionsInExcessOfPartnerShareOfIncomeLoss_7a288cc6-5ead-4ab5-8905-c6997c372233" xlink:href="mac-20250630.xsd#mac_JointVentureDistributionsInExcessOfPartnerShareOfIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:to="loc_mac_JointVentureDistributionsInExcessOfPartnerShareOfIncomeLoss_7a288cc6-5ead-4ab5-8905-c6997c372233" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FairValueAdjustmentOfFinanceObligation_b1fe7f1f-95fe-43c3-ae3e-d43be50e7fad" xlink:href="mac-20250630.xsd#mac_FairValueAdjustmentOfFinanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:to="loc_mac_FairValueAdjustmentOfFinanceObligation_b1fe7f1f-95fe-43c3-ae3e-d43be50e7fad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_50a84483-8461-4646-9a60-a44f2aff0cf5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ScheduleOfJointVenturesLineItems_c80167ee-517a-44b8-9796-20b3e60cb9ca" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_50a84483-8461-4646-9a60-a44f2aff0cf5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/NoncontrollingInterestsDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#NoncontrollingInterestsDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/NoncontrollingInterestsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestTable_2756e03f-338c-42ee-a6f6-a52059e67556" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_us-gaap_MinorityInterestTable_2756e03f-338c-42ee-a6f6-a52059e67556" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_79629e3b-c3f7-4da0-90fd-f07538b8e9b6" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_2756e03f-338c-42ee-a6f6-a52059e67556" xlink:to="loc_srt_OwnershipAxis_79629e3b-c3f7-4da0-90fd-f07538b8e9b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_79629e3b-c3f7-4da0-90fd-f07538b8e9b6_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_79629e3b-c3f7-4da0-90fd-f07538b8e9b6" xlink:to="loc_srt_OwnershipDomain_79629e3b-c3f7-4da0-90fd-f07538b8e9b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_2ed3523b-ca92-4ea0-86ba-307e0a172d46" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_79629e3b-c3f7-4da0-90fd-f07538b8e9b6" xlink:to="loc_srt_OwnershipDomain_2ed3523b-ca92-4ea0-86ba-307e0a172d46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_TheMacerichPartnershipLPMember_c62ebfad-e4db-4419-8a55-c704068b0b0a" xlink:href="mac-20250630.xsd#mac_TheMacerichPartnershipLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_2ed3523b-ca92-4ea0-86ba-307e0a172d46" xlink:to="loc_mac_TheMacerichPartnershipLPMember_c62ebfad-e4db-4419-8a55-c704068b0b0a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_5242466e-c69a-4d17-b567-f1cb58188b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_5242466e-c69a-4d17-b567-f1cb58188b2b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_2f4e895e-30cc-41ff-b17b-37b553e88bbd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_2f4e895e-30cc-41ff-b17b-37b553e88bbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_56911abb-0a02-408a-960a-702c1180e8e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_56911abb-0a02-408a-960a-702c1180e8e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MinorityInterestRedemptionValueBasisNumberOfTradingDays_38c22177-9169-4a87-996f-541b50fe4979" xlink:href="mac-20250630.xsd#mac_MinorityInterestRedemptionValueBasisNumberOfTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_mac_MinorityInterestRedemptionValueBasisNumberOfTradingDays_38c22177-9169-4a87-996f-541b50fe4979" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_MinorityInterestRedemptionValue_cff86cde-51c3-4f0d-89b9-4a6c619a0128" xlink:href="mac-20250630.xsd#mac_MinorityInterestRedemptionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_07e1184c-4319-4773-a9c0-6d2473c74631" xlink:to="loc_mac_MinorityInterestRedemptionValue_cff86cde-51c3-4f0d-89b9-4a6c619a0128" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#StockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/StockholdersEquityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_c2948555-01d9-44db-a563-9caf817f720d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_c2948555-01d9-44db-a563-9caf817f720d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_577af74f-a436-4135-9150-3460fb5f4895" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_c2948555-01d9-44db-a563-9caf817f720d" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_577af74f-a436-4135-9150-3460fb5f4895" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_577af74f-a436-4135-9150-3460fb5f4895_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_577af74f-a436-4135-9150-3460fb5f4895" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_577af74f-a436-4135-9150-3460fb5f4895_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_577af74f-a436-4135-9150-3460fb5f4895" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_A2021ATMProgramMember_65d46ba7-a975-4913-90c5-3e23b8317083" xlink:href="mac-20250630.xsd#mac_A2021ATMProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:to="loc_mac_A2021ATMProgramMember_65d46ba7-a975-4913-90c5-3e23b8317083" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ATMProgramMember_4c484289-73cc-476e-ae83-f333215d5e29" xlink:href="mac-20250630.xsd#mac_ATMProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:to="loc_mac_ATMProgramMember_4c484289-73cc-476e-ae83-f333215d5e29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PublicOfferingMember_d7597885-4766-4143-8717-072e76c9c66c" xlink:href="mac-20250630.xsd#mac_PublicOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:to="loc_mac_PublicOfferingMember_d7597885-4766-4143-8717-072e76c9c66c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_UnderwritersMember_e94f1aac-6d1f-4dcf-aef8-2bca8b8e6d32" xlink:href="mac-20250630.xsd#mac_UnderwritersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_ec3b93c0-d9d3-481d-8a1c-af7be72e0532" xlink:to="loc_mac_UnderwritersMember_e94f1aac-6d1f-4dcf-aef8-2bca8b8e6d32" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_4fef2b32-0cec-4d73-9e92-90348d0c37c7" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_4fef2b32-0cec-4d73-9e92-90348d0c37c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_99ba0175-0192-474a-9bbe-fc25f8bfa5c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_99ba0175-0192-474a-9bbe-fc25f8bfa5c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_b2b81419-1597-4cb0-aab5-712594577cbd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_b2b81419-1597-4cb0-aab5-712594577cbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_f4ef271c-f464-4b58-8c84-a269aa78ee13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_f4ef271c-f464-4b58-8c84-a269aa78ee13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SaleOfStockConsiderationReceivedOnTransactionGross_67476c02-67e9-4f68-a5bb-b2170cfe2e3d" xlink:href="mac-20250630.xsd#mac_SaleOfStockConsiderationReceivedOnTransactionGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_mac_SaleOfStockConsiderationReceivedOnTransactionGross_67476c02-67e9-4f68-a5bb-b2170cfe2e3d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_c88a3cab-e182-4402-891d-ea99c539aaab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_c88a3cab-e182-4402-891d-ea99c539aaab" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_UnderwritingDiscountAndOfferingCosts_a5b26576-f36b-4202-bc10-b11d762422dd" xlink:href="mac-20250630.xsd#mac_UnderwritingDiscountAndOfferingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_mac_UnderwritingDiscountAndOfferingCosts_a5b26576-f36b-4202-bc10-b11d762422dd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_4b852a23-c06b-41d4-b8b2-f75307f59b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_83344c2c-0ead-452f-9bfa-f57454013c06" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_4b852a23-c06b-41d4-b8b2-f75307f59b8e" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/AcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#AcquisitionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/AcquisitionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_srt_CounterpartyNameAxis_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_671300d7-a3ae-40d5-9716-015221cc93bb" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_bed5ff6a-35a6-4ffc-b5ac-a1004751e3dd" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_671300d7-a3ae-40d5-9716-015221cc93bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ThirdPartyMember_2ff35176-6beb-4315-8563-1505d162da72" xlink:href="mac-20250630.xsd#mac_ThirdPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_671300d7-a3ae-40d5-9716-015221cc93bb" xlink:to="loc_mac_ThirdPartyMember_2ff35176-6beb-4315-8563-1505d162da72" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_068c49e1-9a25-4ca7-93cd-f8ce431ea31d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_068c49e1-9a25-4ca7-93cd-f8ce431ea31d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_068c49e1-9a25-4ca7-93cd-f8ce431ea31d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_068c49e1-9a25-4ca7-93cd-f8ce431ea31d" xlink:to="loc_us-gaap_RelatedPartyDomain_068c49e1-9a25-4ca7-93cd-f8ce431ea31d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_9a0a1807-b463-49bd-9c52-34951fc6ac10" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_068c49e1-9a25-4ca7-93cd-f8ce431ea31d" xlink:to="loc_us-gaap_RelatedPartyDomain_9a0a1807-b463-49bd-9c52-34951fc6ac10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_ea8a3ce6-4267-4ef4-8a72-73b6423c1060" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_9a0a1807-b463-49bd-9c52-34951fc6ac10" xlink:to="loc_us-gaap_CorporateJointVentureMember_ea8a3ce6-4267-4ef4-8a72-73b6423c1060" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_62a01d26-3eee-4bd5-93d6-03bd255d1b55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_AssetAcquisitionAxis_62a01d26-3eee-4bd5-93d6-03bd255d1b55" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_62a01d26-3eee-4bd5-93d6-03bd255d1b55_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_62a01d26-3eee-4bd5-93d6-03bd255d1b55" xlink:to="loc_us-gaap_AssetAcquisitionDomain_62a01d26-3eee-4bd5-93d6-03bd255d1b55_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_62a01d26-3eee-4bd5-93d6-03bd255d1b55" xlink:to="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_b9d7717f-9736-4c4c-96f9-0ceb026cd149" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:to="loc_mac_ArrowheadTowneCenterMember_b9d7717f-9736-4c4c-96f9-0ceb026cd149" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_0aa2398e-3669-4914-b46d-2152b8bef2c8" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:to="loc_mac_SouthPlainsMallMember_0aa2398e-3669-4914-b46d-2152b8bef2c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CrabtreeMallMember_cf3e249a-6ba6-44d9-aa96-b82c61c6f1e8" xlink:href="mac-20250630.xsd#mac_CrabtreeMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:to="loc_mac_CrabtreeMallMember_cf3e249a-6ba6-44d9-aa96-b82c61c6f1e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SearsBoxAtInlandCenterMember_a79373ad-357d-486a-a3f6-3d895edd5e97" xlink:href="mac-20250630.xsd#mac_SearsBoxAtInlandCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_80556b8a-9ba8-49c5-b7a1-4ffd4db26703" xlink:to="loc_mac_SearsBoxAtInlandCenterMember_a79373ad-357d-486a-a3f6-3d895edd5e97" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5e820179-9b59-42d2-a33e-7e4555201f2f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_3dfcc7b9-8f8a-4345-8dca-8a033e79fd71" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5e820179-9b59-42d2-a33e-7e4555201f2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_WashingtonSquareMember_da43e017-01b6-4dc7-8576-c0282a0352bb" xlink:href="mac-20250630.xsd#mac_WashingtonSquareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5e820179-9b59-42d2-a33e-7e4555201f2f" xlink:to="loc_mac_WashingtonSquareMember_da43e017-01b6-4dc7-8576-c0282a0352bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FlatIronCrossingMember_4e9686a3-f663-48ea-ad69-9305166ec3fc" xlink:href="mac-20250630.xsd#mac_FlatIronCrossingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_5e820179-9b59-42d2-a33e-7e4555201f2f" xlink:to="loc_mac_FlatIronCrossingMember_4e9686a3-f663-48ea-ad69-9305166ec3fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_a541f983-aab5-489d-9f70-f1d05104a215" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_a541f983-aab5-489d-9f70-f1d05104a215" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a541f983-aab5-489d-9f70-f1d05104a215_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a541f983-aab5-489d-9f70-f1d05104a215" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a541f983-aab5-489d-9f70-f1d05104a215_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_a541f983-aab5-489d-9f70-f1d05104a215" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_f01d56ab-9641-4c12-ada2-56e95ed8771d" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:to="loc_mac_ArrowheadTowneCenterMember_f01d56ab-9641-4c12-ada2-56e95ed8771d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_5296a076-7f49-4ddb-8217-d3a9b97fdff5" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:to="loc_mac_SouthPlainsMallMember_5296a076-7f49-4ddb-8217-d3a9b97fdff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SearsBoxAtInlandCenterMember_5faea0de-5dfe-4e8d-8814-fb990d315378" xlink:href="mac-20250630.xsd#mac_SearsBoxAtInlandCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:to="loc_mac_SearsBoxAtInlandCenterMember_5faea0de-5dfe-4e8d-8814-fb990d315378" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PacificPremierRetailLLCMember_200c1745-7a84-4f05-8992-13476a66ec56" xlink:href="mac-20250630.xsd#mac_PacificPremierRetailLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ee34d20d-3d94-400f-942e-336bf203ec9b" xlink:to="loc_mac_PacificPremierRetailLLCMember_200c1745-7a84-4f05-8992-13476a66ec56" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_da6435dc-792e-4a5a-84be-388d646de221" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_da6435dc-792e-4a5a-84be-388d646de221" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_da6435dc-792e-4a5a-84be-388d646de221_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_da6435dc-792e-4a5a-84be-388d646de221" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_da6435dc-792e-4a5a-84be-388d646de221_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_15774d66-3369-4050-a508-68e206b912b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_da6435dc-792e-4a5a-84be-388d646de221" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_15774d66-3369-4050-a508-68e206b912b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_e78bc199-ce36-4b40-94ca-8288d9271bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_15774d66-3369-4050-a508-68e206b912b5" xlink:to="loc_us-gaap_SecuredDebtMember_e78bc199-ce36-4b40-94ca-8288d9271bf8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_971523d1-580a-4f8b-bdc8-a76bc13262d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_DebtInstrumentAxis_971523d1-580a-4f8b-bdc8-a76bc13262d3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_971523d1-580a-4f8b-bdc8-a76bc13262d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_971523d1-580a-4f8b-bdc8-a76bc13262d3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_971523d1-580a-4f8b-bdc8-a76bc13262d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a371e26a-6708-49c0-b1d2-be46e4564139" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_971523d1-580a-4f8b-bdc8-a76bc13262d3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a371e26a-6708-49c0-b1d2-be46e4564139" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FirstMortgageMember_829a71ab-7be7-455f-a2d8-833c6fb69dab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FirstMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a371e26a-6708-49c0-b1d2-be46e4564139" xlink:to="loc_us-gaap_FirstMortgageMember_829a71ab-7be7-455f-a2d8-833c6fb69dab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_fb958715-354b-4cc0-825c-333d931f0c8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_023bf26b-e5ab-408c-8cee-5f079b52f2e5" xlink:to="loc_us-gaap_CreditFacilityAxis_fb958715-354b-4cc0-825c-333d931f0c8f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_fb958715-354b-4cc0-825c-333d931f0c8f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_fb958715-354b-4cc0-825c-333d931f0c8f" xlink:to="loc_us-gaap_CreditFacilityDomain_fb958715-354b-4cc0-825c-333d931f0c8f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3f1ec480-a2be-49ee-89df-a870a58d02e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_fb958715-354b-4cc0-825c-333d931f0c8f" xlink:to="loc_us-gaap_CreditFacilityDomain_3f1ec480-a2be-49ee-89df-a870a58d02e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_c86ba1f0-0c2b-46ab-8e62-6d2482f6d2ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_3f1ec480-a2be-49ee-89df-a870a58d02e4" xlink:to="loc_us-gaap_LineOfCreditMember_c86ba1f0-0c2b-46ab-8e62-6d2482f6d2ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_JointVentureOwnershipPercentAcquired_bb9960e3-2c2b-4758-a27a-cb067743bdb5" xlink:href="mac-20250630.xsd#mac_JointVentureOwnershipPercentAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_mac_JointVentureOwnershipPercentAcquired_bb9960e3-2c2b-4758-a27a-cb067743bdb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionConsiderationTransferred_5d7cba13-45f7-450e-b2bf-4c2287891f73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_AssetAcquisitionConsiderationTransferred_5d7cba13-45f7-450e-b2bf-4c2287891f73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_d9f94a9f-5f2b-4839-a74a-48ab24ba6231" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_d9f94a9f-5f2b-4839-a74a-48ab24ba6231" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetFairValue_8983d90d-ebb9-489a-be1c-ba0e53ed5b70" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetFairValue_8983d90d-ebb9-489a-be1c-ba0e53ed5b70" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireLand_f9ed18ca-c7dd-4698-a7c3-365c7e22974c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireLand"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_PaymentsToAcquireLand_f9ed18ca-c7dd-4698-a7c3-365c7e22974c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_b7bb7182-b424-41ac-b2d2-9dcade0f9f5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_b7bb7182-b424-41ac-b2d2-9dcade0f9f5b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_2c05849c-69d6-4650-a1d9-cc0c7af2fc6c" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_2c05849c-69d6-4650-a1d9-cc0c7af2fc6c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_f6b62c49-e272-4c86-bbc7-fee03d972567" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_mac_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_f6b62c49-e272-4c86-bbc7-fee03d972567" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_79460eb2-b35f-445c-b6de-7498d74a2140" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_79460eb2-b35f-445c-b6de-7498d74a2140" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_c112cfdb-56e8-4d09-a7c4-a513753f03a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_c112cfdb-56e8-4d09-a7c4-a513753f03a5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_35b54e3c-5b49-410e-9ae6-47ece518859d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_DebtInstrumentTerm_35b54e3c-5b49-410e-9ae6-47ece518859d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e01e450e-23b4-4135-a3a9-bb32717c497b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e01e450e-23b4-4135-a3a9-bb32717c497b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_8ac4fa69-1cc9-45da-a6e2-e710b142e12e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_us-gaap_RepaymentsOfDebt_8ac4fa69-1cc9-45da-a6e2-e710b142e12e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PaymentsForAssetAcquisitions_a119ce6f-7c7e-4afc-b162-7916cce0eae3" xlink:href="mac-20250630.xsd#mac_PaymentsForAssetAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_0a57b8d9-7dc9-4fd9-ba10-02af66b397e8" xlink:to="loc_mac_PaymentsForAssetAcquisitions_a119ce6f-7c7e-4afc-b162-7916cce0eae3" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/AcquisitionsScheduleofAllocationofFairValueofBusinessAcquiredDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#AcquisitionsScheduleofAllocationofFairValueofBusinessAcquiredDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/AcquisitionsScheduleofAllocationofFairValueofBusinessAcquiredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_469dd7f0-1625-4785-97fd-2eb6f64a81a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_469dd7f0-1625-4785-97fd-2eb6f64a81a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_4bcee606-f459-43af-8849-6f49fe80f509" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_469dd7f0-1625-4785-97fd-2eb6f64a81a6" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_4bcee606-f459-43af-8849-6f49fe80f509" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4bcee606-f459-43af-8849-6f49fe80f509_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4bcee606-f459-43af-8849-6f49fe80f509" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4bcee606-f459-43af-8849-6f49fe80f509_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4bcee606-f459-43af-8849-6f49fe80f509" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ArrowheadTowneCenterMember_7b9b7887-ab1b-430f-8264-4f4e66aff90c" xlink:href="mac-20250630.xsd#mac_ArrowheadTowneCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:to="loc_mac_ArrowheadTowneCenterMember_7b9b7887-ab1b-430f-8264-4f4e66aff90c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthPlainsMallMember_cdf30954-1f7c-400b-a211-3da5ffb494fd" xlink:href="mac-20250630.xsd#mac_SouthPlainsMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:to="loc_mac_SouthPlainsMallMember_cdf30954-1f7c-400b-a211-3da5ffb494fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PacificPremierRetailLLCMember_771daec0-2a1b-469c-8b1d-8829379ce225" xlink:href="mac-20250630.xsd#mac_PacificPremierRetailLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:to="loc_mac_PacificPremierRetailLLCMember_771daec0-2a1b-469c-8b1d-8829379ce225" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CrabtreeMallMember_30a62aad-a6af-43f9-b496-d8c33c0d1ae8" xlink:href="mac-20250630.xsd#mac_CrabtreeMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4fdaa3bc-5312-4a6f-bccf-4fe0f2a9b229" xlink:to="loc_mac_CrabtreeMallMember_30a62aad-a6af-43f9-b496-d8c33c0d1ae8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedProperty_25e5b0af-6988-4840-be7d-862f2a559cda" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedProperty_25e5b0af-6988-4840-be7d-862f2a559cda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredCharges_b8c279af-3171-4ba9-9d06-cb6a3b4287cb" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredCharges_b8c279af-3171-4ba9-9d06-cb6a3b4287cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssets_bbd885a2-4904-48bc-9986-02ed5cd5e6d2" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssets_bbd885a2-4904-48bc-9986-02ed5cd5e6d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_fe508a6e-b971-4d74-aaf6-ee8237165345" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_fe508a6e-b971-4d74-aaf6-ee8237165345" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMortgageNotePayable_b20c966a-b665-42ec-baef-d9a07027f8c8" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMortgageNotePayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMortgageNotePayable_b20c966a-b665-42ec-baef-d9a07027f8c8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDiscountOnMortgageNotePayable_8a85e2fe-ebd1-4e77-aaf1-d80251343d87" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDiscountOnMortgageNotePayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDiscountOnMortgageNotePayable_8a85e2fe-ebd1-4e77-aaf1-d80251343d87" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAccruedLiabilities_0e48912e-4004-4e9d-9bb5-ff1bef6f17ae" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAccruedLiabilities_0e48912e-4004-4e9d-9bb5-ff1bef6f17ae" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2ca62701-d188-4ffe-b0b4-038f66f8e640" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_2ca62701-d188-4ffe-b0b4-038f66f8e640" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_20ab6594-3080-4b0c-810d-977d20461962" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_20ab6594-3080-4b0c-810d-977d20461962" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_e3945d12-7438-4bc0-817d-5b8ebe611bd3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_e3945d12-7438-4bc0-817d-5b8ebe611bd3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionPercentageOfSharesOwned_e4d01f46-8ada-4d88-9ce3-2086e8932813" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionPercentageOfSharesOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_dc468796-d1fd-4772-9330-dff0f736648a" xlink:to="loc_mac_AssetAcquisitionPercentageOfSharesOwned_e4d01f46-8ada-4d88-9ce3-2086e8932813" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/AcquisitionsScheduleofAllocationofFairValueofAssetsAcquiredDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#AcquisitionsScheduleofAllocationofFairValueofAssetsAcquiredDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/AcquisitionsScheduleofAllocationofFairValueofAssetsAcquiredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2489c901-d8fa-41fb-8ebc-6bde374b022f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2489c901-d8fa-41fb-8ebc-6bde374b022f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_914926a3-bddf-4983-8570-677d90420c5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2489c901-d8fa-41fb-8ebc-6bde374b022f" xlink:to="loc_us-gaap_AssetAcquisitionAxis_914926a3-bddf-4983-8570-677d90420c5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_914926a3-bddf-4983-8570-677d90420c5e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_914926a3-bddf-4983-8570-677d90420c5e" xlink:to="loc_us-gaap_AssetAcquisitionDomain_914926a3-bddf-4983-8570-677d90420c5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_cab24d98-4d5e-4ff4-ad20-57deb7f0a38c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_914926a3-bddf-4983-8570-677d90420c5e" xlink:to="loc_us-gaap_AssetAcquisitionDomain_cab24d98-4d5e-4ff4-ad20-57deb7f0a38c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CrabtreeMallMember_3fe31288-812a-47fb-9577-ff33f9015af4" xlink:href="mac-20250630.xsd#mac_CrabtreeMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_cab24d98-4d5e-4ff4-ad20-57deb7f0a38c" xlink:to="loc_mac_CrabtreeMallMember_3fe31288-812a-47fb-9577-ff33f9015af4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionProperty_0ae0f880-84ff-44e3-9d68-98bb5a5b9c57" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionProperty_0ae0f880-84ff-44e3-9d68-98bb5a5b9c57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionsDeferredCharges_ba2534db-51f4-43bf-9c53-1d077f1e31c2" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionsDeferredCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionsDeferredCharges_ba2534db-51f4-43bf-9c53-1d077f1e31c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionsOtherAssets_1b8e43a1-f26b-4917-b55d-f4df21b4545b" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionsOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionsOtherAssets_1b8e43a1-f26b-4917-b55d-f4df21b4545b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionAssetAcquired_4d81c3d3-2ba6-4249-9156-af9e7b0eb458" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionAssetAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionAssetAcquired_4d81c3d3-2ba6-4249-9156-af9e7b0eb458" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionOtherAccruedLiabilities_d0c468f1-be35-4f82-b78e-7934827b2927" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionOtherAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionOtherAccruedLiabilities_d0c468f1-be35-4f82-b78e-7934827b2927" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionLiabilities_9a6ee4be-d126-43f9-8402-e9c0641cb764" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionLiabilities_9a6ee4be-d126-43f9-8402-e9c0641cb764" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet_33ad1523-33f3-4afe-bf31-3b8cde76c2d9" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet_33ad1523-33f3-4afe-bf31-3b8cde76c2d9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCreditsReceived_3fb96f2c-f3e5-4488-a03e-58602f60cf7b" xlink:href="mac-20250630.xsd#mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCreditsReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCreditsReceived_3fb96f2c-f3e5-4488-a03e-58602f60cf7b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionConsiderationTransferredTransactionCost_0c1db24a-30f9-494e-be54-876f5cf1542f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferredTransactionCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_us-gaap_AssetAcquisitionConsiderationTransferredTransactionCost_0c1db24a-30f9-494e-be54-876f5cf1542f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_2028e050-f60c-4693-bf40-221e84182e2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_2028e050-f60c-4693-bf40-221e84182e2c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AssetAcquisitionPercentageOfSharesOwned_80c6ecef-0eb0-4b21-b823-36738373d69c" xlink:href="mac-20250630.xsd#mac_AssetAcquisitionPercentageOfSharesOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_5d2d902f-c97a-4f19-8b15-4c4a8cc83757" xlink:to="loc_mac_AssetAcquisitionPercentageOfSharesOwned_80c6ecef-0eb0-4b21-b823-36738373d69c" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/DispositionsInvestmentReclassificationDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#DispositionsInvestmentReclassificationDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/DispositionsInvestmentReclassificationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_40315f99-34d9-4ce1-93c4-ec1fc9752494" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_40315f99-34d9-4ce1-93c4-ec1fc9752494" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_592daf77-9d19-4bf0-b082-f14e276666d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_40315f99-34d9-4ce1-93c4-ec1fc9752494" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_592daf77-9d19-4bf0-b082-f14e276666d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_592daf77-9d19-4bf0-b082-f14e276666d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_592daf77-9d19-4bf0-b082-f14e276666d1" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_592daf77-9d19-4bf0-b082-f14e276666d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_0ac4d840-ff83-4de8-ba83-18352ec3ea00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_592daf77-9d19-4bf0-b082-f14e276666d1" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_0ac4d840-ff83-4de8-ba83-18352ec3ea00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfByMeansOtherThanSaleMember_f8488be2-613e-49b6-bd68-af344dfa5ba0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DiscontinuedOperationsDisposedOfByMeansOtherThanSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_0ac4d840-ff83-4de8-ba83-18352ec3ea00" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfByMeansOtherThanSaleMember_f8488be2-613e-49b6-bd68-af344dfa5ba0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_b9f389e1-5d58-487d-bb46-abccf91f7e2c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_40315f99-34d9-4ce1-93c4-ec1fc9752494" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_b9f389e1-5d58-487d-bb46-abccf91f7e2c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_b9f389e1-5d58-487d-bb46-abccf91f7e2c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_b9f389e1-5d58-487d-bb46-abccf91f7e2c" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_b9f389e1-5d58-487d-bb46-abccf91f7e2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_d5b8a757-5067-4b79-9ffc-56dd9b3a342b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_b9f389e1-5d58-487d-bb46-abccf91f7e2c" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_d5b8a757-5067-4b79-9ffc-56dd9b3a342b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ChandlerFashionCenterMortgageMember_0c48ec38-e09b-4e98-b6b2-523158bffb2d" xlink:href="mac-20250630.xsd#mac_ChandlerFashionCenterMortgageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_d5b8a757-5067-4b79-9ffc-56dd9b3a342b" xlink:to="loc_mac_ChandlerFashionCenterMortgageMember_0c48ec38-e09b-4e98-b6b2-523158bffb2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FairValueOfInvestmentInUnconsolidatedJointVentures_63d1d56d-aea0-424c-ae9c-8611c4aaa8cc" xlink:href="mac-20250630.xsd#mac_FairValueOfInvestmentInUnconsolidatedJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:to="loc_mac_FairValueOfInvestmentInUnconsolidatedJointVentures_63d1d56d-aea0-424c-ae9c-8611c4aaa8cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FinancingArrangementObligationAdjustment_44b36e49-b123-4848-9aae-d10e05aa4bff" xlink:href="mac-20250630.xsd#mac_FinancingArrangementObligationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:to="loc_mac_FinancingArrangementObligationAdjustment_44b36e49-b123-4848-9aae-d10e05aa4bff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DeconsolidationExcessOfLiabilitiesOverAssets_f49b3ffe-8197-4b5e-9a86-c00c8956d07c" xlink:href="mac-20250630.xsd#mac_DeconsolidationExcessOfLiabilitiesOverAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:to="loc_mac_DeconsolidationExcessOfLiabilitiesOverAssets_f49b3ffe-8197-4b5e-9a86-c00c8956d07c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ValueOfDeconsolidatedAsset_7eaf805c-600c-4541-8454-4776093d155d" xlink:href="mac-20250630.xsd#mac_ValueOfDeconsolidatedAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_0e22536f-fca3-46a1-b44c-c6ea320acbc7" xlink:to="loc_mac_ValueOfDeconsolidatedAsset_7eaf805c-600c-4541-8454-4776093d155d" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/DispositionsNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#DispositionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/DispositionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_3d79306a-a0b6-4d41-904b-185b1f98a7ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_3d79306a-a0b6-4d41-904b-185b1f98a7ea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_3d79306a-a0b6-4d41-904b-185b1f98a7ea" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_494a2ea0-ea81-42c4-b7ef-9a92fb93fec2" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ValleVistaMallMember_500e4a18-c129-499a-85ce-919f405540cc" xlink:href="mac-20250630.xsd#mac_ValleVistaMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_ValleVistaMallMember_500e4a18-c129-499a-85ce-919f405540cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthridgeMallMember_f108b55a-df70-4ad0-a009-f241b949e6f1" xlink:href="mac-20250630.xsd#mac_SouthridgeMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_SouthridgeMallMember_f108b55a-df70-4ad0-a009-f241b949e6f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_TheOaksMember_f9c59b6c-59ff-4f31-8be3-067f2321d307" xlink:href="mac-20250630.xsd#mac_TheOaksMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_TheOaksMember_f9c59b6c-59ff-4f31-8be3-067f2321d307" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_WiltonMallMember_b422a11b-8fb8-41af-829a-1dd4c2339612" xlink:href="mac-20250630.xsd#mac_WiltonMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_WiltonMallMember_b422a11b-8fb8-41af-829a-1dd4c2339612" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SanTanAdjacentInGilbertArizonaMember_f1f8e379-814b-40df-8073-64eb1c18b83e" xlink:href="mac-20250630.xsd#mac_SanTanAdjacentInGilbertArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_SanTanAdjacentInGilbertArizonaMember_f1f8e379-814b-40df-8073-64eb1c18b83e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SouthParkMallMember_dfda83a3-dd32-422d-8ba6-851b37e39389" xlink:href="mac-20250630.xsd#mac_SouthParkMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_SouthParkMallMember_dfda83a3-dd32-422d-8ba6-851b37e39389" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ParadiseValleyMallInPhoenixArizonaMember_c3d2c8c6-7d70-4577-8ac9-1735d2f04b96" xlink:href="mac-20250630.xsd#mac_ParadiseValleyMallInPhoenixArizonaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_ParadiseValleyMallInPhoenixArizonaMember_c3d2c8c6-7d70-4577-8ac9-1735d2f04b96" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_PetalumaCaliforniaMember_1e1cd48e-fb9c-46d0-a4b6-dec4cacc4dc0" xlink:href="mac-20250630.xsd#mac_PetalumaCaliforniaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_PetalumaCaliforniaMember_1e1cd48e-fb9c-46d0-a4b6-dec4cacc4dc0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_FashionDistrictPhiladelphiaInPhiladelphiaPennsylvaniaMember_01075e6a-fd2f-40c9-a5b7-fbfc69658a9c" xlink:href="mac-20250630.xsd#mac_FashionDistrictPhiladelphiaInPhiladelphiaPennsylvaniaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9fb81ff5-fd0f-40f7-9fdb-041571b6f675" xlink:to="loc_mac_FashionDistrictPhiladelphiaInPhiladelphiaPennsylvaniaMember_01075e6a-fd2f-40c9-a5b7-fbfc69658a9c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_12f53241-a7ef-4d03-aa11-e2a174d138c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_3d79306a-a0b6-4d41-904b-185b1f98a7ea" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_12f53241-a7ef-4d03-aa11-e2a174d138c6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_12f53241-a7ef-4d03-aa11-e2a174d138c6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_12f53241-a7ef-4d03-aa11-e2a174d138c6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_12f53241-a7ef-4d03-aa11-e2a174d138c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_1e789db2-fb6e-4eee-b134-5d52c0ec58ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_12f53241-a7ef-4d03-aa11-e2a174d138c6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_1e789db2-fb6e-4eee-b134-5d52c0ec58ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_5c2ae298-0356-429d-8f61-5a86e1fb225b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_1e789db2-fb6e-4eee-b134-5d52c0ec58ed" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_5c2ae298-0356-429d-8f61-5a86e1fb225b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_a3909ee1-caff-4760-ad4e-f70d90887e94" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_3d79306a-a0b6-4d41-904b-185b1f98a7ea" xlink:to="loc_srt_ProductOrServiceAxis_a3909ee1-caff-4760-ad4e-f70d90887e94" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a3909ee1-caff-4760-ad4e-f70d90887e94_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_a3909ee1-caff-4760-ad4e-f70d90887e94" xlink:to="loc_srt_ProductsAndServicesDomain_a3909ee1-caff-4760-ad4e-f70d90887e94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_4e25fc5f-4f3e-4d72-9845-9f14e01a5c01" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_a3909ee1-caff-4760-ad4e-f70d90887e94" xlink:to="loc_srt_ProductsAndServicesDomain_4e25fc5f-4f3e-4d72-9845-9f14e01a5c01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_c7000c5a-2ca6-416c-ac22-3b01b2620a1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4e25fc5f-4f3e-4d72-9845-9f14e01a5c01" xlink:to="loc_us-gaap_LandMember_c7000c5a-2ca6-416c-ac22-3b01b2620a1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures_eeb0ddbc-57a5-441f-9203-d06c4ca56754" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_ProceedsFromRealEstateAndRealEstateJointVentures_eeb0ddbc-57a5-441f-9203-d06c4ca56754" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_1dd9dd15-ea08-4eb8-8578-27ea8180d7b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_1dd9dd15-ea08-4eb8-8578-27ea8180d7b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_86cfa47f-ea07-438e-952d-192d9948f9e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_86cfa47f-ea07-438e-952d-192d9948f9e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_e99fbc0d-7ee2-4b69-bf86-0f7a094cbe6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_e99fbc0d-7ee2-4b69-bf86-0f7a094cbe6c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_fecc66cc-78ff-4aea-afeb-363b8842a6fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_836b4204-33fa-4b6d-838a-4cdf804bbd30" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_fecc66cc-78ff-4aea-afeb-363b8842a6fe" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/RelatedPartyTransactionsScheduleofFeesChargedtoUnconsolidatedJointVenturesDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#RelatedPartyTransactionsScheduleofFeesChargedtoUnconsolidatedJointVenturesDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/RelatedPartyTransactionsScheduleofFeesChargedtoUnconsolidatedJointVenturesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_0917d4f6-6b29-4215-8341-e8106845979b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_166414fa-70c7-4c2d-9263-fb4c25c06198" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_0917d4f6-6b29-4215-8341-e8106845979b" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_166414fa-70c7-4c2d-9263-fb4c25c06198" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62b0a333-d17d-43e5-93ab-3be7d27b0da7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_166414fa-70c7-4c2d-9263-fb4c25c06198" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62b0a333-d17d-43e5-93ab-3be7d27b0da7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_62b0a333-d17d-43e5-93ab-3be7d27b0da7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62b0a333-d17d-43e5-93ab-3be7d27b0da7" xlink:to="loc_us-gaap_RelatedPartyDomain_62b0a333-d17d-43e5-93ab-3be7d27b0da7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ca394565-4ce8-4850-83d9-1822a25a536f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_62b0a333-d17d-43e5-93ab-3be7d27b0da7" xlink:to="loc_us-gaap_RelatedPartyDomain_ca394565-4ce8-4850-83d9-1822a25a536f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_cb6a0dcc-d3fd-450d-9e50-f75f3bdd3e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_ca394565-4ce8-4850-83d9-1822a25a536f" xlink:to="loc_us-gaap_RelatedPartyMember_cb6a0dcc-d3fd-450d-9e50-f75f3bdd3e7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_11955f97-9261-4ad6-ba9b-5ce04cc4127e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_166414fa-70c7-4c2d-9263-fb4c25c06198" xlink:to="loc_srt_ProductOrServiceAxis_11955f97-9261-4ad6-ba9b-5ce04cc4127e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_11955f97-9261-4ad6-ba9b-5ce04cc4127e_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_11955f97-9261-4ad6-ba9b-5ce04cc4127e" xlink:to="loc_srt_ProductsAndServicesDomain_11955f97-9261-4ad6-ba9b-5ce04cc4127e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a628062c-e2a6-412d-b40d-0d932968d8ce" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_11955f97-9261-4ad6-ba9b-5ce04cc4127e" xlink:to="loc_srt_ProductsAndServicesDomain_a628062c-e2a6-412d-b40d-0d932968d8ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManagementServiceMember_0d752304-69cb-4df9-8aca-23781f45f7f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ManagementServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a628062c-e2a6-412d-b40d-0d932968d8ce" xlink:to="loc_us-gaap_ManagementServiceMember_0d752304-69cb-4df9-8aca-23781f45f7f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DevelopmentandLeasingFeesMember_dbbf6503-e3a2-445e-8b94-93d38ed5e6f3" xlink:href="mac-20250630.xsd#mac_DevelopmentandLeasingFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a628062c-e2a6-412d-b40d-0d932968d8ce" xlink:to="loc_mac_DevelopmentandLeasingFeesMember_dbbf6503-e3a2-445e-8b94-93d38ed5e6f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f90ac936-567b-41ee-8066-be7a50fbc0fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_0917d4f6-6b29-4215-8341-e8106845979b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f90ac936-567b-41ee-8066-be7a50fbc0fb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#RelatedPartyTransactionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_4edd435c-02b6-41b1-918c-42863c714929" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4a0c4754-c986-4765-98f3-0f2b64156bdb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_4edd435c-02b6-41b1-918c-42863c714929" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4a0c4754-c986-4765-98f3-0f2b64156bdb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4a0c4754-c986-4765-98f3-0f2b64156bdb" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d" xlink:to="loc_us-gaap_RelatedPartyDomain_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_24d0315b-2bc7-42d5-9941-70d3a02ec3f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f0f7e1f1-d7f0-40fb-8909-f137f7ec644d" xlink:to="loc_us-gaap_RelatedPartyDomain_24d0315b-2bc7-42d5-9941-70d3a02ec3f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_636e968b-76f6-400f-8fdd-09b66cdbfe4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_24d0315b-2bc7-42d5-9941-70d3a02ec3f9" xlink:to="loc_us-gaap_RelatedPartyMember_636e968b-76f6-400f-8fdd-09b66cdbfe4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_e06e7a7a-3045-4aa4-b4a6-00069bafbc0b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_4edd435c-02b6-41b1-918c-42863c714929" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_e06e7a7a-3045-4aa4-b4a6-00069bafbc0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_78a1c584-71fd-41d1-99ff-cd5ce064733b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_4edd435c-02b6-41b1-918c-42863c714929" xlink:to="loc_us-gaap_OtherReceivables_78a1c584-71fd-41d1-99ff-cd5ce064733b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/ShareandUnitBasedPlansNarrativeDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#ShareandUnitBasedPlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/ShareandUnitBasedPlansNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_51572a7d-4d62-4d33-83df-91aaa1117341" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_51572a7d-4d62-4d33-83df-91aaa1117341" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_51572a7d-4d62-4d33-83df-91aaa1117341" xlink:to="loc_us-gaap_AwardTypeAxis_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_92dd15c3-51ad-46a1-9756-1fb794024aaa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_1428eaa0-d5e8-4c14-a14f-9f6e8833fb25" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_92dd15c3-51ad-46a1-9756-1fb794024aaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_StockUnitsMember_6e6f9317-adeb-4b0c-b405-c0754e94b61f" xlink:href="mac-20250630.xsd#mac_StockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_92dd15c3-51ad-46a1-9756-1fb794024aaa" xlink:to="loc_mac_StockUnitsMember_6e6f9317-adeb-4b0c-b405-c0754e94b61f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LongTermIncentivePlanMember_fbb0f52a-084a-4f8f-a477-a0223070132f" xlink:href="mac-20250630.xsd#mac_LongTermIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_92dd15c3-51ad-46a1-9756-1fb794024aaa" xlink:to="loc_mac_LongTermIncentivePlanMember_fbb0f52a-084a-4f8f-a477-a0223070132f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PhantomShareUnitsPSUsMember_258015a1-52b4-436f-85be-78f7bd317d9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PhantomShareUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_92dd15c3-51ad-46a1-9756-1fb794024aaa" xlink:to="loc_us-gaap_PhantomShareUnitsPSUsMember_258015a1-52b4-436f-85be-78f7bd317d9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConversionRate_37c71a30-7f0c-467c-89af-0c032b736df7" xlink:href="mac-20250630.xsd#mac_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConversionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsConversionRate_37c71a30-7f0c-467c-89af-0c032b736df7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_8b16b0ca-a17c-4a76-80a7-3c8273a44f47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_8b16b0ca-a17c-4a76-80a7-3c8273a44f47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_12dd9846-4b07-4078-b338-8f6f8dffcc0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_12dd9846-4b07-4078-b338-8f6f8dffcc0d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2d15238a-4c48-4c43-8af6-ac6dc63fcb74" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2d15238a-4c48-4c43-8af6-ac6dc63fcb74" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_cc2dfacb-525c-4432-a3bd-46a50be26fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7a585a89-7441-4e7b-9ba3-97bec9cfe3a5" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_cc2dfacb-525c-4432-a3bd-46a50be26fb1" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofLTIUnitsGrantedDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#ShareandUnitBasedPlansScheduleofLTIUnitsGrantedDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofLTIUnitsGrantedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fbf89383-15a6-4417-9dbc-c01e614b64f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_256d1dae-300b-4b34-8f04-b6f5bd4afa98" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fbf89383-15a6-4417-9dbc-c01e614b64f0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_256d1dae-300b-4b34-8f04-b6f5bd4afa98" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_4bf91045-17ad-42ea-976b-2ab3db2878dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_256d1dae-300b-4b34-8f04-b6f5bd4afa98" xlink:to="loc_us-gaap_AwardTypeAxis_4bf91045-17ad-42ea-976b-2ab3db2878dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4bf91045-17ad-42ea-976b-2ab3db2878dd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_4bf91045-17ad-42ea-976b-2ab3db2878dd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4bf91045-17ad-42ea-976b-2ab3db2878dd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e583b66e-77b3-4272-8cfe-946375084c95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_4bf91045-17ad-42ea-976b-2ab3db2878dd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e583b66e-77b3-4272-8cfe-946375084c95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LongTermIncentivePlanServicebasedMember_b485e109-718f-4ecf-b4ca-2a91bd3228e8" xlink:href="mac-20250630.xsd#mac_LongTermIncentivePlanServicebasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e583b66e-77b3-4272-8cfe-946375084c95" xlink:to="loc_mac_LongTermIncentivePlanServicebasedMember_b485e109-718f-4ecf-b4ca-2a91bd3228e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LongTermIncentivePlanPerformanceBasedMember_b56e9e55-0974-4542-86ce-7dc38ceff219" xlink:href="mac-20250630.xsd#mac_LongTermIncentivePlanPerformanceBasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e583b66e-77b3-4272-8cfe-946375084c95" xlink:to="loc_mac_LongTermIncentivePlanPerformanceBasedMember_b56e9e55-0974-4542-86ce-7dc38ceff219" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateAxis_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_256d1dae-300b-4b34-8f04-b6f5bd4afa98" xlink:to="loc_us-gaap_AwardDateAxis_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329" xlink:to="loc_us-gaap_AwardDateDomain_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_9a2813f4-b71a-4c97-af53-bd51f76a8f04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_f42075c6-fb4b-4f8e-8db8-5b1e0dedd329" xlink:to="loc_us-gaap_AwardDateDomain_9a2813f4-b71a-4c97-af53-bd51f76a8f04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_February212025Member_fcac488e-b788-467c-91f6-d8ef6a9f6deb" xlink:href="mac-20250630.xsd#mac_February212025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_9a2813f4-b71a-4c97-af53-bd51f76a8f04" xlink:to="loc_mac_February212025Member_fcac488e-b788-467c-91f6-d8ef6a9f6deb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_eaf9ecd8-8639-42c8-9d4e-13fc96882716" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fbf89383-15a6-4417-9dbc-c01e614b64f0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_eaf9ecd8-8639-42c8-9d4e-13fc96882716" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ad689c77-f88f-4252-a9fe-1318618d976e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fbf89383-15a6-4417-9dbc-c01e614b64f0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_ad689c77-f88f-4252-a9fe-1318618d976e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofActivityofNonvestedLTIUnitsStockAwardsPhantomStockandStockUnitsDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#ShareandUnitBasedPlansScheduleofActivityofNonvestedLTIUnitsStockAwardsPhantomStockandStockUnitsDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofActivityofNonvestedLTIUnitsStockAwardsPhantomStockandStockUnitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2fefe3d4-8ff4-4bdd-a603-615fc1699aee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e437acde-8dff-4d8b-b5f7-f3891d44cd0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2fefe3d4-8ff4-4bdd-a603-615fc1699aee" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e437acde-8dff-4d8b-b5f7-f3891d44cd0a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e437acde-8dff-4d8b-b5f7-f3891d44cd0a" xlink:to="loc_us-gaap_AwardTypeAxis_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08a2961d-8163-49b0-bcb9-9c447960c637" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_114a1d0f-b25d-4cb9-b8be-d9ea860a7c99" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08a2961d-8163-49b0-bcb9-9c447960c637" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LongTermIncentivePlanMember_e3c29fd2-fdd1-4d81-b061-a84a7592bd9a" xlink:href="mac-20250630.xsd#mac_LongTermIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08a2961d-8163-49b0-bcb9-9c447960c637" xlink:to="loc_mac_LongTermIncentivePlanMember_e3c29fd2-fdd1-4d81-b061-a84a7592bd9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PhantomShareUnitsPSUsMember_d16e8821-0a03-4083-ba2f-c03c652a3d7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PhantomShareUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08a2961d-8163-49b0-bcb9-9c447960c637" xlink:to="loc_us-gaap_PhantomShareUnitsPSUsMember_d16e8821-0a03-4083-ba2f-c03c652a3d7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_StockUnitsMember_0eb62ced-4ed9-4905-a768-303274a5743e" xlink:href="mac-20250630.xsd#mac_StockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08a2961d-8163-49b0-bcb9-9c447960c637" xlink:to="loc_mac_StockUnitsMember_0eb62ced-4ed9-4905-a768-303274a5743e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_74a51254-55ac-44dc-8a36-e09f782d459d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2fefe3d4-8ff4-4bdd-a603-615fc1699aee" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_74a51254-55ac-44dc-8a36-e09f782d459d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_b9e48633-02bf-4d83-a6ec-bb02b3ba58e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_74a51254-55ac-44dc-8a36-e09f782d459d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_b9e48633-02bf-4d83-a6ec-bb02b3ba58e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_5bcf56fd-b53a-459a-8877-bcd7952802fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_74a51254-55ac-44dc-8a36-e09f782d459d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_5bcf56fd-b53a-459a-8877-bcd7952802fe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e42136fc-44ef-492f-8c54-8ea31c77c689" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_74a51254-55ac-44dc-8a36-e09f782d459d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_e42136fc-44ef-492f-8c54-8ea31c77c689" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_acbd8c7a-d49f-419c-8b0a-e7b7107ed61a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward_b2790359-0ec5-4a27-963f-c4587f50338e" xlink:href="mac-20250630.xsd#mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2fefe3d4-8ff4-4bdd-a603-615fc1699aee" xlink:to="loc_mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward_b2790359-0ec5-4a27-963f-c4587f50338e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_304ec85a-05af-4ef5-978a-bf6b4c67c4f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward_b2790359-0ec5-4a27-963f-c4587f50338e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_304ec85a-05af-4ef5-978a-bf6b4c67c4f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4af24ca4-a72e-45b5-891e-b566d39085aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward_b2790359-0ec5-4a27-963f-c4587f50338e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4af24ca4-a72e-45b5-891e-b566d39085aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_46eb2a6a-9a6b-4340-ae7d-e650596d6604" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageExercisePriceRollforward_b2790359-0ec5-4a27-963f-c4587f50338e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_46eb2a6a-9a6b-4340-ae7d-e650596d6604" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_68b07883-bea2-44ee-908d-f576c9d4e3cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofVestedStockOptionsRollforwardDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#ShareandUnitBasedPlansScheduleofVestedStockOptionsRollforwardDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofVestedStockOptionsRollforwardDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3a10e80a-9c47-4680-9ca3-525f176e79c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c157683-df12-4574-9aca-5ecbfcae9cab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3a10e80a-9c47-4680-9ca3-525f176e79c6" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c157683-df12-4574-9aca-5ecbfcae9cab" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_d2338419-f9b7-4614-b255-7b78b66ec2df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c157683-df12-4574-9aca-5ecbfcae9cab" xlink:to="loc_us-gaap_AwardTypeAxis_d2338419-f9b7-4614-b255-7b78b66ec2df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d2338419-f9b7-4614-b255-7b78b66ec2df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_d2338419-f9b7-4614-b255-7b78b66ec2df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d2338419-f9b7-4614-b255-7b78b66ec2df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_433c69ad-2b3f-44a9-adc2-a7fc67360627" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_d2338419-f9b7-4614-b255-7b78b66ec2df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_433c69ad-2b3f-44a9-adc2-a7fc67360627" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_1fc52760-8bd1-44af-bba3-d140a7d10312" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_433c69ad-2b3f-44a9-adc2-a7fc67360627" xlink:to="loc_us-gaap_EmployeeStockOptionMember_1fc52760-8bd1-44af-bba3-d140a7d10312" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardStockOptionsOutstandingAbstract_9cb4ad01-2171-48cb-ab8b-624b62ac5680" xlink:href="mac-20250630.xsd#mac_SharebasedCompensationArrangementbySharebasedPaymentAwardStockOptionsOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3a10e80a-9c47-4680-9ca3-525f176e79c6" xlink:to="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardStockOptionsOutstandingAbstract_9cb4ad01-2171-48cb-ab8b-624b62ac5680" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3933b7d7-920d-4277-a269-bfcf121f42c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardStockOptionsOutstandingAbstract_9cb4ad01-2171-48cb-ab8b-624b62ac5680" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3933b7d7-920d-4277-a269-bfcf121f42c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_e0371e11-e23d-4aeb-8dee-388254eb55a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3933b7d7-920d-4277-a269-bfcf121f42c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_e0371e11-e23d-4aeb-8dee-388254eb55a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_21590928-b16f-4a77-9f0e-c27d588c53e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_3933b7d7-920d-4277-a269-bfcf121f42c6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_21590928-b16f-4a77-9f0e-c27d588c53e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_b7630f2f-b317-4688-8229-3496407a1349" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_2c3657ad-f0e3-42b3-abac-377522a8100d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mac_SharebasedCompensationArrangementbySharebasedPaymentAwardStockOptionsOutstandingAbstract_9cb4ad01-2171-48cb-ab8b-624b62ac5680" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_2c3657ad-f0e3-42b3-abac-377522a8100d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4b12955b-a6d4-433f-8858-5993c3754448" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_2c3657ad-f0e3-42b3-abac-377522a8100d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_4b12955b-a6d4-433f-8858-5993c3754448" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_4d625bc0-b05d-4d03-9737-5a0a127431a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_2c3657ad-f0e3-42b3-abac-377522a8100d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_4d625bc0-b05d-4d03-9737-5a0a127431a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_00f96063-f7aa-4016-bd5b-d41a55b8b10e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofCompensationCostundertheShareandUnitbasedPlansDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#ShareandUnitBasedPlansScheduleofCompensationCostundertheShareandUnitbasedPlansDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/ShareandUnitBasedPlansScheduleofCompensationCostundertheShareandUnitbasedPlansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01083b8b-1e0d-4762-8f79-9fcd76dff828" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b93f40aa-d145-4380-ad36-3a5959a355ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01083b8b-1e0d-4762-8f79-9fcd76dff828" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b93f40aa-d145-4380-ad36-3a5959a355ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b32c8873-781d-4846-905c-405a9059cad1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b93f40aa-d145-4380-ad36-3a5959a355ed" xlink:to="loc_us-gaap_AwardTypeAxis_b32c8873-781d-4846-905c-405a9059cad1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b32c8873-781d-4846-905c-405a9059cad1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_b32c8873-781d-4846-905c-405a9059cad1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b32c8873-781d-4846-905c-405a9059cad1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_16ff8542-0440-48dc-a728-debe688b4476" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_b32c8873-781d-4846-905c-405a9059cad1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_16ff8542-0440-48dc-a728-debe688b4476" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_LongTermIncentivePlanMember_60df1a90-6c81-4ea2-ac93-651af9d9d273" xlink:href="mac-20250630.xsd#mac_LongTermIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_16ff8542-0440-48dc-a728-debe688b4476" xlink:to="loc_mac_LongTermIncentivePlanMember_60df1a90-6c81-4ea2-ac93-651af9d9d273" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_StockUnitsMember_685aa839-f88e-4793-bb38-95e888563395" xlink:href="mac-20250630.xsd#mac_StockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_16ff8542-0440-48dc-a728-debe688b4476" xlink:to="loc_mac_StockUnitsMember_685aa839-f88e-4793-bb38-95e888563395" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PhantomShareUnitsPSUsMember_b0f6b7a0-b3c4-4ddc-ae7d-58546458c91b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PhantomShareUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_16ff8542-0440-48dc-a728-debe688b4476" xlink:to="loc_us-gaap_PhantomShareUnitsPSUsMember_b0f6b7a0-b3c4-4ddc-ae7d-58546458c91b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_a4276255-a76b-4724-b8d2-12eeb76a97bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01083b8b-1e0d-4762-8f79-9fcd76dff828" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_a4276255-a76b-4724-b8d2-12eeb76a97bf" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.macerich.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="mac-20250630.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.macerich.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_9b0a9991-18c0-4ecc-b503-51296fd6826c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_9b0a9991-18c0-4ecc-b503-51296fd6826c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9b0a9991-18c0-4ecc-b503-51296fd6826c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_9b0a9991-18c0-4ecc-b503-51296fd6826c" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9b0a9991-18c0-4ecc-b503-51296fd6826c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_28c5e821-bf71-48e5-a27d-235f7128ea60" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_9b0a9991-18c0-4ecc-b503-51296fd6826c" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_28c5e821-bf71-48e5-a27d-235f7128ea60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_AtlasParkMember_80a76615-7e6d-451b-8a7e-fccced47da2c" xlink:href="mac-20250630.xsd#mac_AtlasParkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_28c5e821-bf71-48e5-a27d-235f7128ea60" xlink:to="loc_mac_AtlasParkMember_80a76615-7e6d-451b-8a7e-fccced47da2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_CrabtreeMallMember_5163c81f-1d2b-4059-b80d-104454a717b8" xlink:href="mac-20250630.xsd#mac_CrabtreeMallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_28c5e821-bf71-48e5-a27d-235f7128ea60" xlink:to="loc_mac_CrabtreeMallMember_5163c81f-1d2b-4059-b80d-104454a717b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_ad4708dd-6f1c-4725-99ae-0f518408a6aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_ad4708dd-6f1c-4725-99ae-0f518408a6aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_ad4708dd-6f1c-4725-99ae-0f518408a6aa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_ad4708dd-6f1c-4725-99ae-0f518408a6aa" xlink:to="loc_us-gaap_RelatedPartyDomain_ad4708dd-6f1c-4725-99ae-0f518408a6aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_16f774cc-fa9c-4499-82dd-8abae95880a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_ad4708dd-6f1c-4725-99ae-0f518408a6aa" xlink:to="loc_us-gaap_RelatedPartyDomain_16f774cc-fa9c-4499-82dd-8abae95880a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateJointVentureMember_46e4ff64-0b4b-4f8f-b4b1-3794a4bcadcb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateJointVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_16f774cc-fa9c-4499-82dd-8abae95880a7" xlink:to="loc_us-gaap_CorporateJointVentureMember_46e4ff64-0b4b-4f8f-b4b1-3794a4bcadcb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_03c03a4a-c475-40da-b2d0-20c189ac24cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_03c03a4a-c475-40da-b2d0-20c189ac24cf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_03c03a4a-c475-40da-b2d0-20c189ac24cf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03c03a4a-c475-40da-b2d0-20c189ac24cf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_03c03a4a-c475-40da-b2d0-20c189ac24cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_98a42d9a-8325-4b86-9626-3c67642f16d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03c03a4a-c475-40da-b2d0-20c189ac24cf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_98a42d9a-8325-4b86-9626-3c67642f16d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_dc6f5e04-b9ce-40c7-ada7-049a686be078" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_98a42d9a-8325-4b86-9626-3c67642f16d5" xlink:to="loc_us-gaap_SecuredDebtMember_dc6f5e04-b9ce-40c7-ada7-049a686be078" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_0c85b52c-303e-488a-b58f-b5d1dd1b7758" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0d0ac454-219c-4f0f-8aed-ef90d38cf249" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_0c85b52c-303e-488a-b58f-b5d1dd1b7758" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_0c85b52c-303e-488a-b58f-b5d1dd1b7758_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0c85b52c-303e-488a-b58f-b5d1dd1b7758" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_0c85b52c-303e-488a-b58f-b5d1dd1b7758_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_3a0ec7f3-b87c-417f-b99a-acb14ca8f860" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0c85b52c-303e-488a-b58f-b5d1dd1b7758" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_3a0ec7f3-b87c-417f-b99a-acb14ca8f860" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_db560d1c-fc48-4219-938b-238a0ed62ddc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_3a0ec7f3-b87c-417f-b99a-acb14ca8f860" xlink:to="loc_us-gaap_SubsequentEventMember_db560d1c-fc48-4219-938b-238a0ed62ddc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_bafca375-ea11-4874-bdec-6e3b68015135" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_bafca375-ea11-4874-bdec-6e3b68015135" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_563e9702-d641-4643-8370-e4d8aa8a68f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_563e9702-d641-4643-8370-e4d8aa8a68f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_575fa44b-3cc8-4d03-acc5-b11c174f299e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_575fa44b-3cc8-4d03-acc5-b11c174f299e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_8554bbd3-ece7-4eed-80b6-560850a0d9b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_LineOfCredit_8554bbd3-ece7-4eed-80b6-560850a0d9b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_8153c07e-36cc-42f3-a9d6-9849af5a0026" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_DebtInstrumentTerm_8153c07e-36cc-42f3-a9d6-9849af5a0026" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_TermLoanFacilityNumberOfExtensionsAllowed_6f901824-b4f8-485f-abe6-b6112936a723" xlink:href="mac-20250630.xsd#mac_TermLoanFacilityNumberOfExtensionsAllowed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_mac_TermLoanFacilityNumberOfExtensionsAllowed_6f901824-b4f8-485f-abe6-b6112936a723" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentExtensionTerm_bddcf9b9-53e8-4c32-86a9-18b853702697" xlink:href="mac-20250630.xsd#mac_DebtInstrumentExtensionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_mac_DebtInstrumentExtensionTerm_bddcf9b9-53e8-4c32-86a9-18b853702697" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_mac_DebtInstrumentAdditionalBorrowingCapacity_9008ee66-c1c4-4fa2-9f82-2e855c328186" xlink:href="mac-20250630.xsd#mac_DebtInstrumentAdditionalBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_mac_DebtInstrumentAdditionalBorrowingCapacity_9008ee66-c1c4-4fa2-9f82-2e855c328186" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d11a1c54-83c7-49c9-aa77-aaf5e2f2aa09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d11a1c54-83c7-49c9-aa77-aaf5e2f2aa09" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7ecb0145-db50-45f2-987f-29605af07e89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7ecb0145-db50-45f2-987f-29605af07e89" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_ae958a76-800f-4b81-b5d0-5d8667344a07" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_ae958a76-800f-4b81-b5d0-5d8667344a07" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCapInterestRate_ce9cfd28-0aa7-4d86-9c25-13d2bc4c7c44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeCapInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_671f3f25-1a18-4d4c-8a77-1754e7fa68cd" xlink:to="loc_us-gaap_DerivativeCapInterestRate_ce9cfd28-0aa7-4d86-9c25-13d2bc4c7c44" xlink:type="arc" order="11"/>
  </link:definitionLink>
</link:linkbase>
