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.
Studies also show that rose petal extract can be soothing for skin, thanks to its natural polyphenols. — Melissa Kravitz Hoeffner, Martha Stewart, 27 June 2026 Orange peels are rich in bioactive compounds such as citric acids, flavonoids, polyphenols, and essential oils like limonene. — Lee Wallender, The Spruce, 22 June 2026 Among the antioxidants in pomegranates, Syn notes, are polyphenols called anthocyanins, which give the fruit its deep red color. — Daryl Austin, USA Today, 2 July 2026 Olives contain polyphenols and other naturally occurring compounds that contribute to their flavor and aroma. — Emily Saladino, Bon Appetit Magazine, 25 June 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 7 Jul. 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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