[ kee-tohn ]
/ ˈki toʊn /
any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH3COCH3 or CH3COC2H5.
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Origin of ketone
1850–55; <German Keton,
aphetic alteration of Acetonacetone
OTHER WORDS FROM ketoneke·ton·ic [ki-ton-ik], /kɪˈtɒn ɪk/, adjective
Words nearby ketone
, ketone body
, ketone group
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for ketone
It also acts as a chromogenic centre when double bonds or ethylenic linkages are present, as in fluorene ketone or fluorenone.
If the groups R and R′ are identical, the ketone is called a simple ketone, if unlike, a mixed ketone.
The hexoses all contain five alcoholic groups and one primary aldehyde, or one secondary aldehyde (ketone), group.
Even the common linseed contains a glucoside which breaks up into sugar, prussic acid, and a ketone.
any of a class of compounds with the general formula R′COR, where R and R′ are alkyl or aryl groupsSee also acetone
Derived forms of ketoneketonic (kɪˈtɒnɪk), adjective
Word Origin for ketone
C19: from German Keton, from Aketon acetone
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
Any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Any of a class of organic compounds having the general formula RCOR′, where R and R′ are hydrocarbon radicals that are both attached to the carbon atom of the carbonyl (CO) group. Acetone is a ketone.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.