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.
In addition to vitamins and minerals, dates contain antioxidants, including compounds known as polyphenols. — Daryl Austin, USA Today, 1 Aug. 2026 The fruit contains polyphenols, which have antioxidant properties that can ease inflammation. — Cynthia Sass, Health, 29 July 2026 Its main fat, oleic acid, and naturally occurring polyphenols may play a role in how the body signals fullness, though research is still evolving. — Julie Scott, Verywell Health, 27 July 2026 Fruit juice also holds on to phytochemicals from the original fruit, including flavonoids, polyphenols, anthocyanins (especially in grape and cherry juice) and carotenoids (especially in orange juice). — Lauren Jarvis-Gibson july 21, Charlotte Observer, 21 July 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 5 Aug. 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
Last Updated: - Updated example sentences
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