The Collaborative International Dictionary of English v.0.48:

Expenditure \Ex*pend"iture\, n.
   1. The act of expending; a laying out, as of money;
      disbursement.
      [1913 Webster]

            Our expenditure purchased commerce and conquest.
                                                  --Burke.
      [1913 Webster]

   2. That which is expended or paid out; expense.
      [1913 Webster]

            The receipts and expenditures of this extensive
            country.                              --A. Hamilton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

expenditure
    n 1: money paid out; an amount spent [syn: outgo, spending,
         expenditure, outlay] [ant: income]
    2: the act of spending money for goods or services [syn:
       expending, expenditure]
    3: the act of consuming something [syn: consumption, using
       up, expenditure]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "expenditure":
   ablation, absorption, accounts, accounts payable,
   accounts receivable, amount, assets, assimilation, attrition,
   budget, budgeting, burning up, charge, consumption, cost,
   costing-out, damage, decrease, decrement, depletion, depreciation,
   digestion, disbursement, dissipation, drain, eating up, erosion,
   evaporation, exhaustion, expending, expenditures, expense, fee,
   figure, finishing, impoverishment, ingestion, leakage, liabilities,
   outgoings, outlay, outstanding accounts, payment, price, price tag,
   rate, receipts, score, shrinkage, spending, squandering, tab,
   unpaid accounts, using, using up, wastage, waste, wastefulness,
   wasting away, wearing, wearing away, wearing down