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
Many fruits contain compounds like potassium, polyphenols, flavonoids, and other nutrients that can help lower blood pressure.
—
Sarah Bence, Verywell Health, 2 Sep. 2025
Not only are these fiber-rich, but berries are rich in collagen-supportive vitamin C and polyphenols, which promote skin hydration and protect against skin inflammation.
—Laura Schober, Health, 27 Aug. 2025
Researchers have developed these microbeads made from tea polyphenols, vitamin E and seaweed that, when consumed, bind to fats in the gastrointestinal tract.
—Hannah Millington, MSNBC Newsweek, 22 Aug. 2025
For example, Coprococcus 1 species – which help with serotonin release – are best supported by high-fiber plant foods like whole grains, leafy green vegetables and legumes, as well as polyphenol-rich berries and tea.
—New Atlas, 12 Aug. 2025
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Sarah Bence, Verywell Health, 2 Sep. 2025
Not only are these fiber-rich, but berries are rich in collagen-supportive vitamin C and polyphenols, which promote skin hydration and protect against skin inflammation.
—Laura Schober, Health, 27 Aug. 2025
Researchers have developed these microbeads made from tea polyphenols, vitamin E and seaweed that, when consumed, bind to fats in the gastrointestinal tract.
—Hannah Millington, MSNBC Newsweek, 22 Aug. 2025
For example, Coprococcus 1 species – which help with serotonin release – are best supported by high-fiber plant foods like whole grains, leafy green vegetables and legumes, as well as polyphenol-rich berries and tea.
—New Atlas, 12 Aug. 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 9 Sep. 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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