›[C or U]ECONOMICS, COMMERCEthe total amount of money that an organization or person spends: reduce/keep down/cut expenditureWe're primarily concerned with keeping expenditure down.increase expenditureexpenditure on sthWe were forced to cut expenditure on R&D.advertising/research/IT expenditure
›[U]formalthe act of using or spending energy, time, or money: the expenditure of sth on sthThe expenditure of effort on this project has been enormous.