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 European Food Safety Authority confirms that olive oil’s polyphenols help protect blood lipids from oxidative damage. —
Allison Palmer, Charlotte Observer, 24 Apr. 2026 Not all olive oils deliver the polyphenols the research describes, and labels can mislead. —Allison Palmer, Kansas City Star, 24 Apr. 2026 Fresher oil holds more active polyphenols. —Allison Palmer, Fort Worth Star-Telegram, 24 Apr. 2026 These effects are attributable to guava's rich content of polyphenols, vitamin C, apigenin, lycopene, and kaempferol. —Lana Barhum, Verywell Health, 22 Apr. 2026 See All Example Sentences for polyphenol
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.
Allison Palmer, Charlotte Observer, 24 Apr. 2026 Not all olive oils deliver the polyphenols the research describes, and labels can mislead. —Allison Palmer, Kansas City Star, 24 Apr. 2026 Fresher oil holds more active polyphenols. —Allison Palmer, Fort Worth Star-Telegram, 24 Apr. 2026 These effects are attributable to guava's rich content of polyphenols, vitamin C, apigenin, lycopene, and kaempferol. —Lana Barhum, Verywell Health, 22 Apr. 2026 See All Example Sentences for polyphenol
Cite this Entry
“Polyphenol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/polyphenol. Accessed 26 Apr. 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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