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

To feed cells that normally subsist on carbs, the liver pumps out molecules called ketones, hence the diet’s name.

From Science Magazine

It is about the presence of the ketone body, a substance produced by the liver and used as an energy source when glucose is not available.

From Science Daily

While specific products aren’t banned, the law states judges enforcing the measure could consider the inclusion of ingredients including creatine, green tea extract and raspberry ketone.

From Seattle Times

"But the ketogenic diet can provide ketones as an alternative fuel to glucose for a brain with energy dysfunction."

From Science Daily

The ketogenic diet is a low-carbohydrate, high fat and moderate protein diet, which shifts the body's metabolism from using glucose as the main fuel source to burning fat and producing ketones for energy.

From Science Daily