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
Your gut bacteria thrive on polyphenols, and for many people, coffee and tea are the easiest daily sources.
—
Dr. Steven Gundry, CNBC, 19 May 2026
Grape seed polyphenols from the vineyards of Bordeaux gave rise to Caudalie.
—Pooja Mistry, Forbes.com, 18 May 2026
Grapefruit has higher antioxidant capacity, while pomegranate offers more polyphenols and anti-inflammatory benefits.
—Jillian Kubala, Health, 18 May 2026
Nutrients in pistachios, such as fiber, polyphenols, and prebiotics, may support beneficial gut bacteria and reduce gut inflammation.
—Morgan Pearson, Verywell Health, 13 May 2026
See All Example Sentences for polyphenol
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Dr. Steven Gundry, CNBC, 19 May 2026
Grape seed polyphenols from the vineyards of Bordeaux gave rise to Caudalie.
—Pooja Mistry, Forbes.com, 18 May 2026
Grapefruit has higher antioxidant capacity, while pomegranate offers more polyphenols and anti-inflammatory benefits.
—Jillian Kubala, Health, 18 May 2026
Nutrients in pistachios, such as fiber, polyphenols, and prebiotics, may support beneficial gut bacteria and reduce gut inflammation.
—Morgan Pearson, Verywell Health, 13 May 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 27 May. 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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