sum Meaning, definition in Cambridge English Dictionary
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Meaning of "sum" - English Dictionary

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sumnoun

uk   us   /sʌm/

sum noun (AMOUNT OF MONEY)

B1 [C] an amount of money: Huge sums of money are spent on national defence. He'll get £50,000 from the company when he retires, which is a tidy (= large) sum.humorous I worked for three whole weeks for which I received the princely (= very low) sum of $100.
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sum noun (CALCULATION)

[C] a calculation, especially a simple one, using such processes as adding, taking away, multiplying, or dividing: I remember how much I hated doing sums when I was at school.

sum noun (TOTAL)

[S] the whole number or amount when two or more numbers or amounts have been added together: The sum of 13 and 8 is 21.in sum formal considered as a whole: The meeting was, in sum, a disaster.the sum of sth all of something: I'm afraid that's the pitiful sum of my knowledge on the subject!
(Definition of sum from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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