say it: suhm
sum is a noun and verb meaning "a quantity of money". It carries 8 recorded senses.
a quantity of money
“he borrowed a large sum”
“the amount he had in cash was insufficient”
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 heart and soul of the Republican Party”
“the nub of the story”
Canada · United Kingdom
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”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for sum come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.