[ frak-shuh-nl ]
/ ˈfræk ʃə nl /


pertaining to fractions; comprising a part or the parts of a unit; constituting a fraction: fractional numbers.
comparatively small; inconsiderable or insignificant: The profit on the deal was fractional.
Chemistry. of or noting a process, as distillation, crystallization, or oxidation, by which the component substances of a mixture are separated according to differences in certain of their properties, as boiling point, critical temperature, or solubility.
Also frac·tion·ar·y [frak-shuh-ner-ee] /ˈfræk ʃəˌnɛr i/.

Origin of fractional

First recorded in 1665–75; fraction + -al1


frac·tion·al·ly, adverbsub·frac·tion·al, adjectivesub·frac·tion·al·ly, adverbsub·frac·tion·ar·y, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fractional

British Dictionary definitions for fractional


fractionary (ˈfrækʃənərI)

/ (ˈfrækʃənəl) /


relating to, containing, or constituting one or more fractions
of or denoting a process in which components of a mixture are separated by exploiting differences in their physical properties, such as boiling points, solubility, etcfractional distillation; fractional crystallization
very small or insignificant
broken up; fragmented

Derived forms of fractional

fractionally, adverb
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