noun
plural sums
[count] :an amount of money
[count] the result of adding two or more numbers together
a simple problem in mathematics - usually plural
[singular] :the whole amount of something
in sum
as a brief statement of the most important information in a piece of writing or speech
in a few words
sum and substance
the general or basic meaning of something said or written
sum of its parts
Something that is greater/better/more than the sum of its parts is better or more effective as a team, combination, etc., than you would expect it to be when you look at the different parts that form it.
verb
sums; summed; summing
sum up
[phrasal verb]
sum up or sum up (something) or sum (something) up :to tell (information) again using fewer words :to give a summary of (statements, facts, etc.) :summarize
sum up (someone or something) or sum (someone or something) up
to describe or show the most important parts or qualities of (someone or something) in a brief or simple way
to describe (someone or something) using few words