ketone

[ kee-tohn ]

noun

, Chemistry.

1. any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH 3 COCH 3 or CH 3 COC 2 H 5 .

adjective

1. containing the ketone group.

ketone

/ ˈkiːtəʊn; kɪˈtɒnɪk /

noun

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

ketone

/ kē′tōn′ /

1. Any of a class of organic compounds having the general formula RCOR|||PRIMARY_STRESS|||, where R and R|||PRIMARY_STRESS||| are hydrocarbon radicals that are both attached to the carbon atom of the carbonyl (CO) group. Acetone is a ketone.

Derived Forms

• ketonic, adjective

Other Words From

• ke·ton·ic [ki-, ton, -ik], adjective

Word History and Origins

Origin of ketone¹

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

Word History and Origins

Origin of ketone¹

C19: from German Keton, from Aketon acetone

Example Sentences

It also acts as a chromogenic centre when double bonds or ethylenic linkages are present, as in fluorene ketone or fluorenone.

From Project Gutenberg

If the groups R and R′ are identical, the ketone is called a simple ketone, if unlike, a mixed ketone.

From Project Gutenberg

The hexoses all contain five alcoholic groups and one primary aldehyde, or one secondary aldehyde (ketone), group.

From Project Gutenberg

Even the common linseed contains a glucoside which breaks up into sugar, prussic acid, and a ketone.

From Project Gutenberg

Ionone, a ketone first prepared by Tiemann, and having when diluted a pronounced violet odour.

From Project Gutenberg