- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fractional
This camouflage ability underscores a broader issue with fractional regulation of a complex industry.Jamie Dimon’s Hubris Unshakable as JPMorgan Reelects Him to Top Two Posts
May 16, 2012
A fractional second of hesitation could not be permitted him.The Forest
Stewart Edward White
For one fractional part of a second the stars and skies were blotted out.Invasion
William Fitzgerald Jenkins
Small quantities are made by using a fractional part of this recipe.Checking the Waste
Mary Huston Gregory
The resulting alcohol is separated by fractional distillation.An Elementary Study of Chemistry
It is possible that they do get a second as it were fractional life in us.The Guardian Angel
Oliver Wendell Holmes, Sr.
- 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
Word Origin and History for fractional
Online Etymology Dictionary, © 2010 Douglas Harper