: any of a class of organic compounds (such as acetone) characterized by a carbonyl group attached to two carbon atoms
Examples of ketone in a Sentence
Recent Examples on the Web
Other common ingredients are caffeine, green tea, green coffee bean extract, garcinia cambogia, and ketones.
—
Sohaib Imtiaz, Verywell Health, 24 Mar. 2025
This much is certain: the benefits of intermittent fasting—including ketones and lower weight and blood glucose—are much greater in mice than humans.
—Matt Fuchs, TIME, 9 Dec. 2024
Their ketone content may support the burning of fat.
—Beatrice Zocchi, Vogue, 11 Apr. 2025
Last week, Democratic senators questioned Oz about his record of pitching unproven treatments like green coffee beans and raspberry ketones for weight loss.
—Dan Gorenstein, NPR, 20 Mar. 2025
See All Example Sentences for ketone
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Sohaib Imtiaz, Verywell Health, 24 Mar. 2025
This much is certain: the benefits of intermittent fasting—including ketones and lower weight and blood glucose—are much greater in mice than humans.
—Matt Fuchs, TIME, 9 Dec. 2024
Their ketone content may support the burning of fat.
—Beatrice Zocchi, Vogue, 11 Apr. 2025
Last week, Democratic senators questioned Oz about his record of pitching unproven treatments like green coffee beans and raspberry ketones for weight loss.
—Dan Gorenstein, NPR, 20 Mar. 2025
See All Example Sentences for ketone
Cite this Entry
“Ketone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ketone. Accessed 2 May. 2025.
Copy CitationMedical Definition
ketone
noun
ke·tone
ˈkē-ˌtōn 
: an organic compound (as acetone) with a carbonyl group attached to two carbon atoms
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