[ frak-shuh-neyt ]

verb (used with object),frac·tion·at·ed, frac·tion·at·ing.
  1. to separate or divide into component parts, fragments, divisions, etc.

  2. to separate (a mixture) into ingredients or into portions having different properties, as by distillation or crystallization; cause to undergo fractional distillation, crystallization, or the like.

  1. to obtain by such a process.

Origin of fractionate

First recorded in 1865–70; fraction + -ate1

Words Nearby fractionate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for fractionate


/ (ˈfrækʃəˌneɪt) /

  1. to separate or cause to separate into constituents or into fractions containing concentrated constituents

  2. (tr) chem to obtain (a constituent of a mixture) by a fractional process

Derived forms of fractionate

  • fractionation, noun
  • fractionator, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012