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



    From Middle English fraccioun ( a breaking ), from Anglo-Norman, from Latin fractio ( “a breaking, a breaking into pieces, in Medieval Latin. a fragment, portion” ), from frangere ( “to break” ), past participle fractus .


    • enPR: frăkʹshən, IPA: /ˈfræk.ʃən/, X-SAMPA: /"fr{kS@n/
    • Rhymes: -ækʃən


    fraction ( plural: fractions )

    1. A part of a whole, especially a comparatively small part.
    2. A ratio of two numbers, the numerator and the denominator, usually written one above the other and separated by a horizontal bar .
    3. ( chemistry ) A component of a mixture, separated by fractionation .
    4. In a eucharistic service, the breaking of the host .
    5. A small amount.


    See also

    • “fraction” in Dictionary.com Unabridged, v1.0.1, Lexico Publishing Group, 2006 .
    • “fraction” in The American Heritage® Dictionary of the English Language, Fourth Edition, Houghton Mifflin Company, 2000 .
    • "fraction" in WordNet 3.0, Princeton University, 2006 .

Explanation of fraction by Wordnet Dictionary


    1. perform a division

    1. a small part or item forming a piece of a whole

    2. the quotient of two rational numbers

    3. a component of a mixture that has been separated by a fractional process

    Definition of fraction by GCIDE Dictionary


    1. Fraction n. [F. fraction, L. fractio a breaking, fr. frangere, fractum, to break. See Break.]
      1. The act of breaking, or state of being broken, especially by violence. [Obs.]

      Neither can the natural body of Christ be subject to any fraction or breaking up. Foxe.

      2. A portion; a fragment.

      Some niggard fractions of an hour. Tennyson.

      3. ( Arith. or Alg. ) One or more aliquot parts of a unit or whole number; an expression for a definite portion of a unit or magnitude.

      Common fraction, or Vulgar fraction, a fraction in which the number of equal parts into which the integer is supposed to be divided is indicated by figures or letters, called the denominator, written below a line, over which is the numerator, indicating the number of these parts included in the fraction; as ½, one half, , two fifths. -- Complex fraction, a fraction having a fraction or mixed number in the numerator or denominator, or in both. Davies & Peck. -- Compound fraction, a fraction of a fraction; two or more fractions connected by of. -- Continued fraction, Decimal fraction, Partial fraction, etc. See under Continued, Decimal, Partial, etc. -- Improper fraction, a fraction in which the numerator is greater than the denominator. -- Proper fraction, a fraction in which the numerator is less than the denominator.

    2. Fraction, v. t. ( Chem. ) To separate by means of, or to subject to, fractional distillation or crystallization; to fractionate; -- frequently used with out; as, “to fraction out a certain grade of oil from pretroleum”.