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
The polyphenols in red grapes, specifically quercetin, myricetin, and resveratrol, may intervene with these diabetic complications.
—
Kathi Valeii Published, Verywell Health, 26 June 2025
Your Skin Health Improves Seed oils' polyphenol and fatty acid composition may support skin health when applied topically (on the skin).
—Amy Brownstein, Verywell Health, 12 June 2025
The team is now planning to explore how coffee’s bioactive compounds — particularly polyphenols and antioxidants — might influence molecular aging pathways, including inflammation, metabolism and vascular health, Mahdavi said.
—Melissa Rudy, FOXNews.com, 2 June 2025
Black tea derives its caffeine from tannins—a type of antioxidant-rich polyphenol also found in spices, chocolate, wine, and, yes, coffee.
—Christina Pérez, Vogue, 27 May 2025
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Kathi Valeii Published, Verywell Health, 26 June 2025
Your Skin Health Improves Seed oils' polyphenol and fatty acid composition may support skin health when applied topically (on the skin).
—Amy Brownstein, Verywell Health, 12 June 2025
The team is now planning to explore how coffee’s bioactive compounds — particularly polyphenols and antioxidants — might influence molecular aging pathways, including inflammation, metabolism and vascular health, Mahdavi said.
—Melissa Rudy, FOXNews.com, 2 June 2025
Black tea derives its caffeine from tannins—a type of antioxidant-rich polyphenol also found in spices, chocolate, wine, and, yes, coffee.
—Christina Pérez, Vogue, 27 May 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 30 Jun. 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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