ketone

[ kee-tohn ]

/ ˈki toʊn /

noun Chemistry.

any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH3COCH3 or CH3COC2H5.

adjective

containing the ketone group.

Nearby words

Origin of ketone

1850–55; < German Keton, aphetic alteration of Aceton acetone

Related formske·ton·ic

[ki-ton-ik] /kɪˈtɒn ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ketone

If the groups R and R′ are identical, the ketone is called a simple ketone, if unlike, a mixed ketone.
Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 7|Various
The hexoses all contain five alcoholic groups and one primary aldehyde, or one secondary aldehyde (ketone), group.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher
Even the common linseed contains a glucoside which breaks up into sugar, prussic acid, and a ketone.
Poisons: Their Effects and Detection|Alexander Wynter Blyth
Besides methyl salicylate, the oil contains triaconitane, an aldehyde or ketone, and an alcohol.
The Handbook of Soap Manufacture|W. H. Simmons

Ionone, a ketone first prepared by Tiemann, and having when diluted a pronounced violet odour.
The Handbook of Soap Manufacture|W. H. Simmons

British Dictionary definitions for ketone

ketone

/ (ˈkiːtəʊn) /

noun

any of a class of compounds with the general formula R′COR, where R and R′ are alkyl or aryl groupsSee also acetone

Derived Formsketonic (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

Word Origin and History for ketone

ketone

chemical group, 1851, from German keton, coined in 1848 by German chemist Leopold Gmelin (1788-1853) from German Aketon, from French acétone (see acetone). Its comb. form is keto-.

Medicine definitions for ketone

ketone

[ kē′tōn′ ]

n.

Any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals.

Science definitions for ketone

ketone

[ kē′tōn′ ]

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.