( lump sums)
A lump sum is an amount of money that is paid as a large amount on a single occasion rather than as smaller amounts on several separate occasions.
...a tax-free lump sum of £50,000 at retirement age.
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LUMP SUM
Meaning of LUMP SUM in English
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006