資料來源 : Webster's Revised Unabridged Dictionary (1913)
Fraction \Frac"tion\, 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, 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 1/2, one half, 2/5, 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.