释义 |
WordReference Random House Learner's Dictionary of American English © 2024sum /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- Idioms in 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 © 2024sum (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.
- 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
sum′less, adj. sum′less•ness, n. - 1.See corresponding entry in Unabridged See number.
sum-, - var. of sub- before m: summon.
SUM, - Militarysurface-to-underwater 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 |