American Dictionary

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Definition sum in American English

sum noun

[countable] noun
/sʌm/
1

an amount of money

Example

He was fined a sum of $1,000.

Example

Companies are prepared to pay substantial sums for the use of our facilities.

Example

We already spend large sums of money on advertising.

2

a simple calculation. To do a sum is to calculate something.

Synonyms and related words
3

a total amount made by adding several numbers or amounts together

Example

The total area was calculated as the sum of all the individual areas in the plan.

Synonyms and related words
Definition sum in American English