sum

definition: the whole amount
example:
speech part: noun
synonyms: aggregate
definition: a quantity obtained by the addition of a group of numbers
example:
speech part: noun
synonyms: amount
definition: the choicest or most essential or most vital part of some idea or experience
example:
speech part: noun
synonyms: substance
definition: the final aggregate
example: the sum of all our troubles did not equal the misery they suffered
speech part: noun
synonyms: summation
definition: a set containing all and only the members of two or more given sets
example:
speech part: noun
synonyms: union
definition: a quantity of money
example: They borrowed a large sum from the bank.
speech part: noun
synonyms: amount
definition: determine the sum of
example:
speech part: verb
synonyms: tally
definition: be a summary of
example: The abstract summarizes the main ideas in the paper
speech part: verb
synonyms: summarize summarise sum up

sum is explained and pronounced

How sum is being used?