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        <link:definition>0615 - Disclosure - Capital Stock, Dividends and Share Repurchases (Details)</link:definition>
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        <link:definition>06102 - Disclosure - Employee Benefit Plans (Details 1)</link:definition>
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      <link:roleType roleURI="http://wm.com/role/EmployeeBenefitPlansDetailsTextual" id="EmployeeBenefitPlansDetailsTextual">
        <link:definition>06103 - Disclosure - Employee Benefit Plans (Details Textual)</link:definition>
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      <link:roleType roleURI="http://wm.com/role/EmployeeBenefitPlansTables" id="EmployeeBenefitPlansTables">
        <link:definition>0510 - Disclosure - Employee Benefit Plans (Tables)</link:definition>
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        <link:definition>06221 - Disclosure - Quarterly Financial Data (Unaudited) (Details Textual)</link:definition>
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      <link:roleType roleURI="http://wm.com/role/QuarterlyFinancialData" id="QuarterlyFinancialData">
        <link:definition>0222 - Disclosure - Quarterly Financial Data (Unaudited)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>0701 - Schedule - Valuation and Qualifying Accounts (Details)</link:definition>
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        <link:definition>06216 - Disclosure - Segment and Related Information (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails5" id="SegmentAndRelatedInformationDetails5">
        <link:definition>06215 - Disclosure - Segment and Related Information (Details 5)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails4" id="SegmentAndRelatedInformationDetails4">
        <link:definition>06214 - Disclosure - Segment and Related Information (Details 4)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails3" id="SegmentAndRelatedInformationDetails3">
        <link:definition>06213 - Disclosure - Segment and Related Information (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails2" id="SegmentAndRelatedInformationDetails2">
        <link:definition>06212 - Disclosure - Segment and Related Information (Details 2)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails1" id="SegmentAndRelatedInformationDetails1">
        <link:definition>06211 - Disclosure - Segment and Related Information (Details 1)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/CommitmentsAndContingenciesTables" id="CommitmentsAndContingenciesTables">
        <link:definition>0511 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AcquisitionsAndDivestitures" id="AcquisitionsAndDivestitures">
        <link:definition>0219 - Disclosure - Acquisitions and Divestitures</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AcquisitionsAndDivestituresTables" id="AcquisitionsAndDivestituresTables">
        <link:definition>0519 - Disclosure - Acquisitions and Divestitures (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsDetailsTextual" id="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsDetailsTextual">
        <link:definition>06131 - Disclosure - (Income) Expense from Divestitures, Asset Impairments and Unusual Items (Details Textual)</link:definition>
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      <link:roleType roleURI="http://wm.com/role/IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsTables" id="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsTables">
        <link:definition>0513 - Disclosure - (Income) Expense from Divestitures Asset Impairments and Unusual Items (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/CommitmentsAndContigenciesDetailsTextual" id="CommitmentsAndContigenciesDetailsTextual">
        <link:definition>06111 - Disclosure - Commitments and Contingencies (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/CommitmentsAndContingenciesDetails" id="CommitmentsAndContingenciesDetails">
        <link:definition>0611 - Disclosure - Commitments and Contingencies (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/DebtDetails1" id="DebtDetails1">
        <link:definition>06071 - Disclosure - Debt (Details 1)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetailsTextual" id="StockBasedCompensationDetailsTextual">
        <link:definition>06165 - Disclosure - Stock-Based Compensation (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetails4" id="StockBasedCompensationDetails4">
        <link:definition>06164 - Disclosure - Stock Based Compensation (Details 4)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetails3" id="StockBasedCompensationDetails3">
        <link:definition>06163 - Disclosure - Stock-Based Compensation (Details 3)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetails2" id="StockBasedCompensationDetails2">
        <link:definition>06162 - Disclosure - Stock-Based Compensation (Details 2)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetails1" id="StockBasedCompensationDetails1">
        <link:definition>06161 - Disclosure - Stock-Based Compensation (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationDetails" id="StockBasedCompensationDetails">
        <link:definition>0616 - Disclosure - Stock-Based Compensation (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensationTables" id="StockBasedCompensationTables">
        <link:definition>0516 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/CapitalStockShareRepurchasesAndDividendsDetailsTextual" id="CapitalStockShareRepurchasesAndDividendsDetailsTextual">
        <link:definition>06151 - Disclosure - Capital Stock, Dividends and Share Repurchases (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CapitalStockShareRepurchasesAndDividendsTables" id="CapitalStockShareRepurchasesAndDividendsTables">
        <link:definition>0515 - Disclosure - Capital Stock, Dividends and Share Repurchases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/NewAccountingPronouncements" id="NewAccountingPronouncements">
        <link:definition>0224 - Disclosure - New Accounting Pronouncements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/StockBasedCompensation" id="StockBasedCompensation">
        <link:definition>0216 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CapitalStockShareRepurchasesAndDividends" id="CapitalStockShareRepurchasesAndDividends">
        <link:definition>0215 - Disclosure - Capital Stock, Dividends and Share Repurchases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetails4" id="IncomeTaxesDetails4">
        <link:definition>06094 - Disclosure - Income Taxes (Details 4)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetails3" id="IncomeTaxesDetails3">
        <link:definition>06093 - Disclosure - Income Taxes (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetails2" id="IncomeTaxesDetails2">
        <link:definition>06092 - Disclosure - Income Taxes (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetails1" id="IncomeTaxesDetails1">
        <link:definition>06091 - Disclosure - Income Taxes (Details 1)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetails" id="IncomeTaxesDetails">
        <link:definition>0609 - Disclosure - Income Taxes (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/IncomeTaxesTables" id="IncomeTaxesTables">
        <link:definition>0509 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AccumulatedOtherComprehensiveIncomeDetailsTextual" id="AccumulatedOtherComprehensiveIncomeDetailsTextual">
        <link:definition>06141 - Disclosure - Accumulated Other Comprehensive Income (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AccumulatedOtherComprehensiveIncomeDetails" id="AccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>0614 - Disclosure - Accumulated Other Comprehensive Income (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AccumulatedOtherComprehensiveIncomeTables" id="AccumulatedOtherComprehensiveIncomeTables">
        <link:definition>0514 - Disclosure - Accumulated Other Comprehensive Income (Tables)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/AccumulatedOtherComprehensiveIncome" id="AccumulatedOtherComprehensiveIncome">
        <link:definition>0214 - Disclosure - Accumulated Other Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/EmployeeBenefitPlansDetails" id="EmployeeBenefitPlansDetails">
        <link:definition>0610 - Disclosure - Employee Benefit Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/EmployeeBenefitPlans" id="EmployeeBenefitPlans">
        <link:definition>0210 - Disclosure - Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/LandfillAndEnvironmentalRemediationLiabilities" id="LandfillAndEnvironmentalRemediationLiabilities">
        <link:definition>0204 - Disclosure - Landfill and Environmental Remediation Liabilities</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPoliciesDetailsTextual" id="SummaryOfSignificantAccountingPoliciesDetailsTextual">
        <link:definition>06033 - Disclosure - Summary of Significant Accounting Policies (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPoliciesDetails2" id="SummaryOfSignificantAccountingPoliciesDetails2">
        <link:definition>06032 - Disclosure - Summary of Significant Accounting Policies (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPoliciesDetails1" id="SummaryOfSignificantAccountingPoliciesDetails1">
        <link:definition>06031 - Disclosure - Summary of Significant Accounting Policies (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPoliciesDetails" id="SummaryOfSignificantAccountingPoliciesDetails">
        <link:definition>0603 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPoliciesTables" id="SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>0503 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/SummaryOfSignificantAccountingPolicies" id="SummaryOfSignificantAccountingPolicies">
        <link:definition>0203 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails5" id="DerivativeInstrumentsAndHedgingActivitiesDetails5">
        <link:definition>06085 - Disclosure - Derivative Instruments and Hedging Activities (Details 5)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails4" id="DerivativeInstrumentsAndHedgingActivitiesDetails4">
        <link:definition>06084 - Disclosure - Derivative Instruments and Hedging Activities (Details 4)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/GoodwillAndOtherIntangibleAssetsDetailsTextual" id="GoodwillAndOtherIntangibleAssetsDetailsTextual">
        <link:definition>06061 - Disclosure - Goodwill and Other Intangible Assets (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://wm.com/role/GoodwillAndOtherIntangibleAssetsDetails" id="GoodwillAndOtherIntangibleAssetsDetails">
        <link:definition>0606 - Disclosure - Goodwill and Other Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/GoodwillAndOtherIntangibleAssetsTables" id="GoodwillAndOtherIntangibleAssetsTables">
        <link:definition>0506 - Disclosure - Goodwill and Other Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/GoodwillAndOtherIntangibleAssets" id="GoodwillAndOtherIntangibleAssets">
        <link:definition>0206 - Disclosure - Goodwill and Other Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/PropertyAndEquipmentTables" id="PropertyAndEquipmentTables">
        <link:definition>0505 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/PropertyAndEquipment" id="PropertyAndEquipment">
        <link:definition>0205 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/PropertyAndEquipmentDetails1" id="PropertyAndEquipmentDetails1">
        <link:definition>06051 - Disclosure - Property and Equipment (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/PropertyAndEquipmentDetails" id="PropertyAndEquipmentDetails">
        <link:definition>0605 - Disclosure - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AccountingChangesAndReclassificationsPolicies" id="AccountingChangesAndReclassificationsPolicies">
        <link:definition>0402 - Disclosure - Accounting Changes and Reclassifications (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AccountingChangesAndReclassifications" id="AccountingChangesAndReclassifications">
        <link:definition>0202 - Disclosure - Accounting Changes and Reclassifications</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/Business" id="Business">
        <link:definition>0201 - Disclosure - Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AcquisitionOfOakleafGlobalHoldingsDetailsTextual" id="AcquisitionOfOakleafGlobalHoldingsDetailsTextual">
        <link:definition>06193 - Disclosure - Acquisitions and Divestitures (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AcquisitionOfOakleafGlobalHoldingsDetails2" id="AcquisitionOfOakleafGlobalHoldingsDetails2">
        <link:definition>06192 - Disclosure - Acquisitions and Divestitures (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AcquisitionOfOakleafGlobalHoldingsDetails1" id="AcquisitionOfOakleafGlobalHoldingsDetails1">
        <link:definition>06191 - Disclosure - Acquisitions and Divestitures (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/AcquisitionOfOakleafGlobalHoldingsDetails" id="AcquisitionOfOakleafGlobalHoldingsDetails">
        <link:definition>0619 - Disclosure - Acquisitions and Divestitures (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/RestructuringDetailsTextual" id="RestructuringDetailsTextual">
        <link:definition>06121 - Disclosure - Restructuring (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/IncomeTaxesDetailsTextual" id="IncomeTaxesDetailsTextual">
        <link:definition>06095 - Disclosure - Income Taxes (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/LandfillAndEnvironmentalRemediationLiabilitiesDetailsTextual" id="LandfillAndEnvironmentalRemediationLiabilitiesDetailsTextual">
        <link:definition>06042 - Disclosure - Landfill and Environmental Remediation Liabilities (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/RestructuringDetails" id="RestructuringDetails">
        <link:definition>0612 - Disclosure - Restructuring (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/RestructuringTables" id="RestructuringTables">
        <link:definition>0512 - Disclosure - Restructuring (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/Restructuring" id="Restructuring">
        <link:definition>0212 - Disclosure - Restructuring</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/FairValueMeasurementsTables" id="FairValueMeasurementsTables">
        <link:definition>0518 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsDetails" id="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsDetails">
        <link:definition>0613 - Disclosure - (Income) Expense from Divestitures, Asset Impairments and Unusual Items (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItems" id="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItems">
        <link:definition>0213 - Disclosure - (Income) Expense from Divestitures, Asset Impairments and Unusual Items</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/VariableInterestEntitiesDetails" id="VariableInterestEntitiesDetails">
        <link:definition>0620 - Disclosure - Variable Interest Entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/VariableInterestEntities" id="VariableInterestEntities">
        <link:definition>0220 - Disclosure - Variable Interest Entities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DebtDetailsTextual" id="DebtDetailsTextual">
        <link:definition>06072 - Disclosure - Debt (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetailsTextual" id="DerivativeInstrumentsAndHedgingActivitiesDetailsTextual">
        <link:definition>06086 - Disclosure - Derivative Instruments and Hedging Activities (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails3" id="DerivativeInstrumentsAndHedgingActivitiesDetails3">
        <link:definition>06083 - Disclosure - Derivative Instruments and Hedging Activities (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails2" id="DerivativeInstrumentsAndHedgingActivitiesDetails2">
        <link:definition>06082 - Disclosure - Derivative Instruments and Hedging Activities (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails1" id="DerivativeInstrumentsAndHedgingActivitiesDetails1">
        <link:definition>06081 - Disclosure - Derivative Instruments and Hedging Activities (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesDetails" id="DerivativeInstrumentsAndHedgingActivitiesDetails">
        <link:definition>0608 - Disclosure - Derivative Instruments and Hedging Activities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivitiesTables" id="DerivativeInstrumentsAndHedgingActivitiesTables">
        <link:definition>0508 - Disclosure - Derivative Instruments and Hedging Activities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DerivativeInstrumentsAndHedgingActivities" id="DerivativeInstrumentsAndHedgingActivities">
        <link:definition>0208 - Disclosure - Derivative Instruments and Hedging Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CondensedConsolidatingFinancialStatementsDetails2" id="CondensedConsolidatingFinancialStatementsDetails2">
        <link:definition>06232 - Disclosure - Condensed Consolidating Financial Statements (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CondensedConsolidatingFinancialStatementsDetails1" id="CondensedConsolidatingFinancialStatementsDetails1">
        <link:definition>06231 - Disclosure - Condensed Consolidating Financial Statements (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/FairValueMeasurementsDetailsTextual" id="FairValueMeasurementsDetailsTextual">
        <link:definition>06181 - Disclosure - Fair Value Measurements (Details Textual)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/LandfillAndEnvironmentalRemediationLiabilitiesDetails1" id="LandfillAndEnvironmentalRemediationLiabilitiesDetails1">
        <link:definition>06041 - Disclosure - Landfill and Environmental Remediation Liabilities (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/IncomeTaxes" id="IncomeTaxes">
        <link:definition>0209 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>00 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationDetails" id="SegmentAndRelatedInformationDetails">
        <link:definition>0621 - Disclosure - Segment and Related Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformationTables" id="SegmentAndRelatedInformationTables">
        <link:definition>0521 - Disclosure - Segment and Related Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DebtDetails" id="DebtDetails">
        <link:definition>0607 - Disclosure - Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/DebtTables" id="DebtTables">
        <link:definition>0507 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CondensedConsolidatingFinancialStatementsDetails" id="CondensedConsolidatingFinancialStatementsDetails">
        <link:definition>0623 - Disclosure - Condensed Consolidating Financial Statements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails">
        <link:definition>0617 - Disclosure - Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/LandfillAndEnvironmentalRemediationLiabilitiesDetails" id="LandfillAndEnvironmentalRemediationLiabilitiesDetails">
        <link:definition>0604 - Disclosure - Landfill and Environmental Remediation Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CondensedConsolidatingFinancialStatementsTables" id="CondensedConsolidatingFinancialStatementsTables">
        <link:definition>0523 - Disclosure - Condensed Consolidating Financial Statements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
        <link:definition>0517 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/LandfillAndEnvironmentalRemediationLiabilitiesTables" id="LandfillAndEnvironmentalRemediationLiabilitiesTables">
        <link:definition>0504 - Disclosure - Landfill and Environmental Remediation Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/FairValueMeasurementsDetails" id="FairValueMeasurementsDetails">
        <link:definition>0618 - Disclosure - Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/StatementsOfChangesInEquityParenthetical" id="StatementsOfChangesInEquityParenthetical">
        <link:definition>0141 - Statement - Consolidated Statements of Changes in Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/StatementsOfChangesInEquity" id="StatementsOfChangesInEquity">
        <link:definition>0140 - Statement - Consolidated Statements of Changes in Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
        <link:definition>0111 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/StatementsOfCashFlows" id="StatementsOfCashFlows">
        <link:definition>0130 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/StatementsOfOperations" id="StatementsOfOperations">
        <link:definition>0120 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/BalanceSheets" id="BalanceSheets">
        <link:definition>0110 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CondensedConsolidatingFinancialStatements" id="CondensedConsolidatingFinancialStatements">
        <link:definition>0223 - Disclosure - Condensed Consolidating Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/FairValueMeasurements" id="FairValueMeasurements">
        <link:definition>0218 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/SegmentAndRelatedInformation" id="SegmentAndRelatedInformation">
        <link:definition>0221 - Disclosure - Segment and Related Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/CommitmentsAndContingencies" id="CommitmentsAndContingencies">
        <link:definition>0211 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/EarningsPerShare" id="EarningsPerShare">
        <link:definition>0217 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://wm.com/role/Debt" id="Debt">
        <link:definition>0207 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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