Dictionary definition · sum
noun
- a quantity of money"he borrowed a large sum"
- a quantity obtained by the addition of a group of numbers
- the final aggregate"the sum of all our troubles did not equal the misery they suffered"
- the choicest or most essential or most vital part of some idea or experience"the gist of the prosecutor's argument"
- the whole amount
- a set containing all and only the members of two or more given sets"let C be the union of the sets A and B"
verb
- be a summary of"The abstract summarizes the main ideas in the paper"
- determine the sum of"Add all the people in this town to those of the neighboring town"
Source: Open English WordNet (CC BY 4.0).