- not saturated; having the power to dissolve still more of a substance.
- Chemistry. (of an organic compound) having a double or triple bond and capable of taking on elements or groups by direct chemical combination without the liberation of other elements or compounds, as ethylene, CH2=CH2; undersaturated.
Origin of unsaturated
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unsaturated
But whence this abundant store of unsaturated metals in the interior?Principles of Geology
The iodine number indicates a small content of unsaturated acids.Soap-Making Manual
E. G. Thomssen
(b) Cellulose combined with unsaturated groups or ligno-celluloses, jute and the woods.
Or the color was changed: light and dark, saturated and unsaturated colors were used.Psychology and Industrial Efficiency
It is an unsaturated compound, and on oxidation with potassium permanganate gives succinic acid.
- not saturated
- (of a chemical compound, esp an organic compound) containing one or more double or triple bonds and thus capable of undergoing addition reactions
- (of a fat, esp a vegetable fat) containing a high proportion of fatty acids having double bonds
- (of a solution) containing less solute than a saturated solution
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
Word Origin and History for unsaturated
Online Etymology Dictionary, © 2010 Douglas Harper
- Of or relating to a solution in which the solvent is capable of dissolving still more of the solute; not saturated.
- Of or relating to a chemical compound in which all the affinities are not satisfied, so that still other atoms or radicals may be added to it.
- Of or relating to chemical compounds containing double and triple bonds.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Relating to an organic compound in which two or more of the carbon atoms are joined by a double or triple bond and therefore can be combined with additional atoms or radicals. Benzene and acetylene are examples of unsaturated compounds. Compare saturated See also monounsaturated polyunsaturated.
- Relating to a solution that is capable of dissolving more solute than it already contains.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.