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fractional distillation

noun, Chemistry
1.
the separation of volatile components of different boiling points in a mixture by the gradual increase of temperature and the separate collection of each component.
Origin
1855-1860
1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for fractional-distillation

fractional distillation

noun
1.
the process of separating the constituents of a liquid mixture by heating it and condensing separately the components according to their different boiling points
2.
a distillation in which the vapour is brought into contact with a countercurrent of condensed liquid to increase the purity of the final products
Sometimes shortened to distillation
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
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fractional-distillation in Science
fractional distillation  
A process by which a chemical compound is separated into components by distillation. In fractional distillation the compound is heated and, as each of its constituent components comes to a boil, its vapors are separated and cooled, so it can be removed in its pure form. Fractional distillation is used to refine petroleum. See also distillation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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