: 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
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In rare cases, this could lead to life-threatening complications like ketoacidosis, a problem caused by excess ketones in the bloodstream and an inability to produce insulin.
—
Laura Dorwart, Verywell Health, 30 Apr. 2025
The study, published in the journal Physiology, examined what happens to the brains of individuals who have limited ketone production in the liver.
—Angelica Stabile, FOXNews.com, 28 Apr. 2025
This process eventually releases substances called ketones, which turn blood acidic.
—Tom Gavin, EverydayHealth.com, 18 Apr. 2025
Raspberries also contain ketones—a type of phenolic compound—which may stimulate the body to burn fat and even increase hair growth, though the scientific evidence around the use of raspberry ketones is still somewhat limited.
—Beatrice Zocchi, Vogue, 11 Apr. 2025
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Laura Dorwart, Verywell Health, 30 Apr. 2025
The study, published in the journal Physiology, examined what happens to the brains of individuals who have limited ketone production in the liver.
—Angelica Stabile, FOXNews.com, 28 Apr. 2025
This process eventually releases substances called ketones, which turn blood acidic.
—Tom Gavin, EverydayHealth.com, 18 Apr. 2025
Raspberries also contain ketones—a type of phenolic compound—which may stimulate the body to burn fat and even increase hair growth, though the scientific evidence around the use of raspberry ketones is still somewhat limited.
—Beatrice Zocchi, Vogue, 11 Apr. 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 20 Jun. 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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