ke·​tone | \ ˈkē-ˌtōn How to pronounce ketone (audio) \

Definition of ketone

: any of a class of organic compounds (such as acetone) characterized by a carbonyl group attached to two carbon atoms

Other Words from ketone

ketonic \ kē-​ˈtä-​nik How to pronounce ketone (audio) \ adjective

Examples of ketone in a Sentence

Recent Examples on the Web Neither has been associated with the secretive ketone project. Amby Burfoot, Outside Online, 29 July 2020 Participants had their blood glucose and ketone levels measured every hour for four hours after consuming each of the options. Cynthia Sass, Mph,, 29 Oct. 2021 The most popular low-carb diet is the high-fat keto diet, and Freeman says there’s some positive data to suggest that ketone production might be a good thing for the body. Washington Post, 12 Aug. 2021 The company is awaiting Food and Drug Administration clearance for its glucose biometer, which would have dual function with its platform used for tracking and testing ketone levels in a person's body. Nick Williams, Star Tribune, 18 June 2021 In a recent study, researchers found that, contrary to prevailing thought, glioblastoma tumors can get around the dearth of glucose by feeding on ketone bodies. Jocelyn Kaiser, Science | AAAS, 1 Apr. 2021 Using fat instead of glucose for fuel produces ketones as a byproduct, which can lead to your blood becoming too acidic, especially in those who don’t have enough properly functioning insulin to control ketone levels. Bruce Y. Lee, Forbes, 20 Mar. 2021 For decades, Dutch chemists have tapped sources in China for BMK to manufacture amphetamine, and its cousin, piperonyl methyl ketone, or PMK, used to manufacture MDMA, the main ingredient in ecstasy. Valentina Pop, WSJ, 8 Dec. 2020 The firm won an Accelerator grant to develop a subcutaneous sensor to simultaneously monitor glucose, ketones, and lactase in diabetic patients. Nicholas Wallace, Science | AAAS, 8 Apr. 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ketone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ketone

1851, in the meaning defined above

History and Etymology for ketone

borrowed from German Keton, coinage based on Aceton acetone

Note: The German term Keton was apparently the coinage of the chemist Leopold Gmelin (1788-1853), who introduced it in Handbuch der organischen Chemie, 1. Band, 4. Auflage (Heidelberg, 1848), p. 40 passim. Gmelin characterized ketones as "Acetone im allgemeinen" ("acetones in general"), acetone being the smallest and simplest ketone.

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Dictionary Entries Near ketone

ketoglutaric acid


ketone body

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Statistics for ketone

Cite this Entry

“Ketone.” Dictionary, Merriam-Webster, Accessed 25 May. 2022.

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More Definitions for ketone


ke·​tone | \ ˈkē-ˌtōn How to pronounce ketone (audio) \

Medical Definition of ketone

: an organic compound (as acetone) with a carbonyl group attached to two carbon atoms

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