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English definition of “lump sum”

lump sum

noun [C usually singular] uk   us  
an amount of money that is paid in one large amount on one occasion: Her divorce settlement included a lump sum of $2 million.General words for amounts of moneyLarge amounts of moneySmall amounts of money
(Definition of lump sum from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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