[1] : The Collaborative International Dictionary of English v.0.48

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.
      1913 webster

            neither can the natural body of christ be subject to
            any fraction or breaking up.          --foxe.
      1913 webster

   2. a portion; a fragment.
      1913 webster

            some niggard fractions of an hour.    --tennyson.
      1913 webster

   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.
      1913 webster

   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 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.
      1913 webster
see also:
break common fraction vulgar fraction complex fraction compound fraction continued fraction 
decimal fraction partial fraction continued decimal partial 
improper fraction proper fraction 

Partial >> P Words
Partial, definition of term: Partial
partial_pag1.html

Fraction >> F Words
Fraction, definition of term: Fraction
fraction_pag1.html