polyphenol
noun
poly·phe·nol
ˌpä-lē-ˈfē-ˌnōl 
-fi-ˈnōl
: a polyhydroxy phenol
especially
: an antioxidant phytochemical
Examples of polyphenol in a Sentence
Recent Examples on the Web
Apples Apples are rich in compounds such as quercetin, pectin, and a range of polyphenols, which have been shown to lower LDL cholesterol and reduce the risk of heart disease over time.
—
Lauren Panoff,
Verywell Health,
6 July 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
Even if cherries aren’t your thing, there are plenty of other fruits that provide anti-inflammatory benefits and can even help your gut thanks to the presence of powerful antioxidants (like polyphenols and vitamin C) and fiber.
—
Laura Solla,
Vogue,
1 July 2026
Blueberries contain anthocyanins, along with other antioxidants and polyphenols that help protect cells from oxidative stress and inflammation.
—
Caitlin Beale,
Health,
29 June 2026
See All Example Sentences for polyphenol
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Lauren Panoff,
Verywell Health,
6 July 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
Even if cherries aren’t your thing, there are plenty of other fruits that provide anti-inflammatory benefits and can even help your gut thanks to the presence of powerful antioxidants (like polyphenols and vitamin C) and fiber.
—
Laura Solla,
Vogue,
1 July 2026
Blueberries contain anthocyanins, along with other antioxidants and polyphenols that help protect cells from oxidative stress and inflammation.
—
Caitlin Beale,
Health,
29 June 2026
See All Example Sentences for polyphenol
Cite this Entry
“Polyphenol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyphenol. Accessed 7 Jul. 2026.
Copy CitationMedical Definition
polyphenol
noun
poly·phe·nol
ˌpäl-i-ˈfē-ˌnōl, -ˌnȯl, -fi-ˈ
: a polyhydroxy phenol
especially
: an antioxidant phytochemical (as chlorogenic acid) that tends to prevent or neutralize the damaging effects of free radicals
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