the aggregate of two or more numbers, magnitudes, quantities, or particulars as determined by or as if by the mathematical process of addition

The sum of 6 and 8 is 14.

a particular aggregate or total, esp. with reference to money

The expenses came to an enormous sum.

an indefinite amount or quantity, esp. of money

to lend small sums.

a series of numbers or quantities to be added up.

an arithmetical problem to be solved, or such a problem worked out and having the various steps shown.

the full amount, or the whole.

the substance or gist of a matter, comprehensively or broadly viewed or expressed

the sum of his opinions.

concise or brief form

in sum.

Mathematics .

the limit of the sequence of partial sums of a given infinite series.

union ( def. 10a ) .

a summary.

to combine into an aggregate or total (often fol. by up ).

to ascertain the sum of, as by addition.

to bring into or contain in a small compass (often fol. by up ).

to amount (usually fol. by to or into )

Their expenses summed into the thousands.

sum up,

to reckon

We summed up our assets and liabilities.

to bring into or contain in a brief and comprehensive statement; summarize

to sum up the case for the prosecution.

to form a quick estimate of

I summed him up in a minute.

verb

close , conclude , condense , digest , epitomize , estimate , examine , get the measure of , inventory , put in a nutshell , recapitulate , review , size up , sum , synopsize , total