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
Kale Kale is a nutrient powerhouse, packed with antioxidants such as flavonoids and polyphenols.
—
Cathy Cassata, Health, 29 Dec. 2025
Coffee Your morning cup of coffee provides polyphenols.
—Jennifer Lefton, Verywell Health, 29 Dec. 2025
Literally all fruit Not only is fruit packed with fiber, it’s also filled with antioxidants (including polyphenols).
—Caroline Tien, SELF, 17 Dec. 2025
Berries are extremely rich in polyphenols and have exceptional antioxidant and anti-inflammatory properties which benefit skin, blood vessels, and brain health.
—Vogue, 12 Dec. 2025
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Cathy Cassata, Health, 29 Dec. 2025
Coffee Your morning cup of coffee provides polyphenols.
—Jennifer Lefton, Verywell Health, 29 Dec. 2025
Literally all fruit Not only is fruit packed with fiber, it’s also filled with antioxidants (including polyphenols).
—Caroline Tien, SELF, 17 Dec. 2025
Berries are extremely rich in polyphenols and have exceptional antioxidant and anti-inflammatory properties which benefit skin, blood vessels, and brain health.
—Vogue, 12 Dec. 2025
See All Example Sentences for polyphenol
Cite this Entry
“Polyphenol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyphenol. Accessed 31 Dec. 2025.
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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