1.Definition: a quantity obtained by the addition of a group of numbers

Related Noun(s):amount, total

Category: General

2.Definition: a quantity of money

"He borrowed a large sum", "The amount he had in cash was insufficient"

Related Noun(s):amount

Category: General

3.Definition: a set containing all and only the members of two or more given sets

Related Noun(s):join, union

Category: General

4.Definition: the choicest or most essential or most vital part of some idea or experience

Related Noun(s):center, centre, core, essence, gist, heart, inwardness, kernel, marrow, meat, nub, pith, substance

Category: General

5.Definition: the final aggregate

"The sum of all our troubles did not equal the misery they suffered"

Related Noun(s):summation

Category: General

6.Definition: the whole amount

Related Noun(s):aggregate, total, totality

Category: Objects