Dictionary > English Dictionary > Definition, synonym and antonym of sum
Meaning of sum by Wiktionary Dictionary



    • ( UK, US ) enPR: sŭm, IPA: /sʌm/, X-SAMPA: /sVm/
    • Rhymes: -ʌm
    • Homophone: some

    Etymology 1

    Middle English summe, from Old French, from Latin summa, feminine of summus ( “highest” ) .


    sum ( plural: sums )

    1. A quantity obtained by addition or aggregation .
      The sum of 3 and 4 is 7 .
    2. ( UK, Ireland ) An arithmetic computation, especially one posed to a student as an exercise ( not necessarily limited to addition. )
    3. A quantity of money .
      a tidy sum
    4. A summary .
    5. A central idea or point .
    6. The utmost degree .
    7. ( obsolete ) An old English measure of corn equal to the quarter.
    Derived terms
    Related terms
    See also
    • addition: ( augend ) + ( addend ) = ( sum )


    sum ( third-person singular simple present sums present participle summing, simple past and past participle summed )

    1. ( transitive ) To add together.
    2. ( transitive ) To give a summary of .

    Etymology 2

    From Uzbek .


    sum ( plural: sums )

    1. The basic unit of money in Kyrgyzstan .
    2. The basic unit of money in Uzbekistan .

    External links

    • sum in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
    • sum in The Century Dictionary, The Century Co., New York, 1911
    • sum at OneLook Dictionary Search



    Proto-Germanic *sumaz, whence also Old High German sum, Old Norse sumr


    sum n .

    1. some


    • English: some


    By Wiktionary ( 2012/08/05 15:00 UTC Version )


    Proto-Germanic *-samaz ( “same as” ). Akin to Old Frisian -sum, Old High German -sam, Old Norse -samr, Gothic -sams, -sama ( "same as" ), Old English sam ( “whether", "or” ), Old English sama ( “same” ) .



    1. characterized by some specific condition or quality; same as
      • angsum ( “difficult, constricted” )
      • āþrotsum ( “irksome” )
      • gecwēmsum ( “pleasing, pleasant” )
    2. having or exemplifying
      • wynsum ( “joyful, winsome” )


    • English: -some

Explanation of sum by Wordnet Dictionary


    1. determine the sum of

    2. be a summary of

    3. The abstract summarizes the main ideas in the paper
    1. the whole amount

    2. a quantity obtained by the addition of a group of numbers

    3. the choicest or most essential or most vital part of some idea or experience

    4. the final aggregate

    5. the sum of all our troubles did not equal the misery they suffered
    6. a set containing all and only the members of two or more given sets

    7. a quantity of money

    8. he borrowed a large sum

    Definition of sum by GCIDE Dictionary


    1. Sum n. [OE. summe, somme, OF. sume, some, F. somme, L. summa, fr. summus highest, a superlative from sub under. See Sub-, and cf. Supreme.]
      1. The aggregate of two or more numbers, magnitudes, quantities, or particulars; the amount or whole of any number of individuals or particulars added together; as, “the sum of 5 and 7 is 12”.

      Take ye the sum of all the congregation. Num. i. 2.

      ☞ Sum is now commonly applied to an aggregate of numbers, and number to an aggregate of persons or things.

      2. A quantity of money or currency; any amount, indefinitely; as, “a sum of money; a small sum, or a large sum”. “The sum of forty pound.” Chaucer.

      With a great sum obtained I this freedom. Acts xxii. 28.

      3. The principal points or thoughts when viewed together; the amount; the substance; compendium; as, “this is the sum of all the evidence in the case; this is the sum and substance of his objections”.

      4. Height; completion; utmost degree.

      Thus have I told thee all my state, and brought

      My story to the sum of earthly bliss. Milton.

      5. ( Arith. ) A problem to be solved, or an example to be wrought out. Macaulay.

      A sum in arithmetic wherein a flaw discovered at a particular point is ipso facto fatal to the whole. Gladstone.

      A large sheet of paper . . . covered with long sums. Dickens.

      Algebraic sum, as distinguished from arithmetical sum, the aggregate of two or more numbers or quantities taken with regard to their signs, as + or -, according to the rules of addition in algebra; thus, the algebraic sum of -2, 8, and -1 is 5. -- In sum, in short; in brief. [Obs.] “In sum, the gospel . . . prescribes every virtue to our conduct, and forbids every sin.” Rogers.

    2. Sum, v. t. [imp. & p. p. Summed ; p. pr. & vb. n. Summing.] [Cf. F. sommer, LL. summare.]
      1. To bring together into one whole; to collect into one amount; to cast up, as a column of figures; to ascertain the totality of; -- usually with up.

      The mind doth value every moment, and then the hour doth rather sum up the moments, than divide the day. Bacon.

      2. To bring or collect into a small compass; to comprise in a few words; to condense; -- usually with up.

      “Go to the ant, thou sluggard,” in few words sums up the moral of this fable. L'Estrange.

      He sums their virtues in himself alone. Dryden.

      3. ( Falconry ) To have ( the feathers ) full grown; to furnish with complete, or full-grown, plumage.

      But feathered soon and fledge

      They summed their pens [wings]. Milton.

      Summing up, a compendium or abridgment; a recapitulation; a résumé; a summary.

      Syn. -- To cast up; collect; comprise; condense; comprehend; compute.