
 Inflections of 'sum' (v): (⇒ conjugate)
 sums
 v 3rd person singular
 summing
 v pres pverb, present participle: ing verb used descriptively or to form progressive verbfor example, "a singing bird," "It is singing."
 summed
 v pastverb, past simple: Past tensefor example, "He saw the man." "She laughed."
 summed
 v past pverb, past participle: Verb form used descriptively or to form verbsfor example, "the locked door," "The door has been locked."
WordReference Random House Learner's Dictionary of American English © 2020sum^{} /sʌm/USA pronunciation
n., v., summed, sum•ming. n. [countable]
 Mathematicsthe total of two or more numbers, amounts, or quantities, determined by or as if by addition:The sum of 6 and 8 is 14.
 an amount or quantity, esp. of money:to lend small sums.
 Mathematicsa series of numbers or quantities to be added up.
 the full amount, or the whole:the sum of our knowledge.
 the main idea, gist, or point:the sum and substance of his argument.
v.
 Mathematics[~ + object] to figure out the sum of, as by addition.
 sum up:
 to express in a brief yet complete statement;
summarize: [~ + up + object]He summed up the main points of the speech.[~ + object + up]Can you sum it all up in just a few words?[no object]ready to sum up at last after a long speech.
 to form a quick estimate or judgment of: [~ + up + object]quickly summed up the situation.[~ + object + up]She summed him up in a minute.
Idioms
 Idiomsin sum, in brief but complete form:In sum, the government believes it knows what it is doing.
sum,^{} root.  sum comes from Latin, where it has the meaning "take up;
pick up.'' This meaning is found in such words as: assume, consume, consumption, presume, presumption, resume, resumé, resumption, subsume.
WordReference Random House Unabridged Dictionary of American English © 2020sum^{} (sum),USA pronunciation
n., v., summed, sum•ming.
n.
 Mathematicsthe 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.
 Mathematicsa series of numbers or quantities to be added up.
 Mathematicsan 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.
v.t.
 to combine into an aggregate or total (often fol. by up).
 Mathematicsto ascertain the sum of, as by addition.
 to bring into or contain in a small compass (often fol. by up).
v.i.
 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.
sum′less, adj.
sum′less•ness, n.
 Medieval Latin summāre, derivative of summa
 Old French summer)
 Latin summa sum, noun, nominal use of feminine of summus highest, superlative of superus (see superior); (verb, verbal) Middle English summen (
 (noun, nominal) Middle English summe 1250–1300
 1.See corresponding entry in Unabridged See number.
sum,^{}
var. of sub before m: summon.
SUM,^{}
Militarysurfacetounderwater missile.
Collins Concise English Dictionary © HarperCollins Publishers::
sum /sʌm/ n  the result of the addition of numbers, quantities, objects, etc
 one or more columns or rows of numbers to be added, subtracted, multiplied, or divided
 the limit of a series of sums of the first n terms of a converging infinite series as n tends to infinity
 a quantity, esp of money: he borrows enormous sums
 the essence or gist of a matter (esp in the phrases in sum, in sum and substance)
 a less common word for summary
 (modifier) complete or final (esp in the phrase sum total)
vb (sums, summing, summed) (often followed by up) to add or form a total of (something)
 (transitive) to calculate the sum of (the terms in a sequence)
See also sum upEtymology: 13th Century summe, from Old French, from Latin summa the top, sum, from summus highest, from superus in a higher position; see super
'sum' also found in these entries:

