polyphenol

noun

poly·​phe·​nol ˌpä-lē-ˈfē-ˌnōl How to pronounce polyphenol (audio)
-fi-ˈnōl
: a polyhydroxy phenol
especially : an antioxidant phytochemical
polyphenolic
ˌpä-lē-fi-ˈnō-lik How to pronounce polyphenol (audio) -ˈnä- How to pronounce polyphenol (audio)
adjective

Examples of polyphenol in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Cloves contain a type of polyphenol called eugenol that can help reduce inflammation and pain. — Carrie Madormo, Verywell Health, 26 Oct. 2026 This type of polyphenol has powerful anti-diabetic properties. — Jillian Kubala, HEALTH, 23 Oct. 2026 Early Harvest Extra Virgin Olive Oil is harvested early in the season at peak polyphenol levels, for a bold, grassy character with notes of green tomato, artichoke, and a signature peppery finish. — ABC News, 17 Oct. 2026 Phytochemistry Butterfly pea contains several flavonol (polyphenol) compounds, notable among which are kaempferol, quercetin, myricetin, and their derivatives. — Encyclopedia Britannica, 9 Oct. 2026 See All Example Sentences for polyphenol

Word History

Etymology

International Scientific Vocabulary

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of polyphenol was in 1894

Rhymes for polyphenol

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Browse Nearby Words

polyphemus moth
polyphenol
polyphenolase
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Cite this Entry

“Polyphenol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyphenol. Accessed 1 Nov. 2026.

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Medical Definition

polyphenol

noun
poly·​phe·​nol ˌpäl-i-ˈfē-ˌnōl, -ˌnȯl, -fi-ˈ How to pronounce polyphenol (audio)
: a polyhydroxy phenol
especially : an antioxidant phytochemical (as chlorogenic acid) that tends to prevent or neutralize the damaging effects of free radicals
polyphenolic
-fi-ˈnō-lik How to pronounce polyphenol (audio) -ˈnäl-ik How to pronounce polyphenol (audio)
adjective
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