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
Walnuts Walnuts stand out among nuts for their exceptionally high levels of polyphenols (plant compounds) and vitamin E, antioxidants that protect fats within the body from harmful oxidation.
—
Lauren Panoff, Verywell Health, 30 Apr. 2026
The plant is loaded with vitamins A, C and K, folate, calcium and potassium, plus prebiotic fiber (inulin, mostly in the roots) and antioxidants like beta-carotene and polyphenols.
—Ryan Brennan, Charlotte Observer, 30 Apr. 2026
Dandelions are also known to contain prebiotic fiber (inulin, primarily in the roots) along with antioxidants like beta-carotene, polyphenols and flavonoids.
—Ryan Brennan, Sacbee.com, 30 Apr. 2026
Dandelions also contain prebiotic fiber — primarily inulin, found in the roots — along with antioxidants including beta-carotene, polyphenols and flavonoids.
—Ryan Brennan, Fort Worth Star-Telegram, 30 Apr. 2026
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Lauren Panoff, Verywell Health, 30 Apr. 2026
The plant is loaded with vitamins A, C and K, folate, calcium and potassium, plus prebiotic fiber (inulin, mostly in the roots) and antioxidants like beta-carotene and polyphenols.
—Ryan Brennan, Charlotte Observer, 30 Apr. 2026
Dandelions are also known to contain prebiotic fiber (inulin, primarily in the roots) along with antioxidants like beta-carotene, polyphenols and flavonoids.
—Ryan Brennan, Sacbee.com, 30 Apr. 2026
Dandelions also contain prebiotic fiber — primarily inulin, found in the roots — along with antioxidants including beta-carotene, polyphenols and flavonoids.
—Ryan Brennan, Fort Worth Star-Telegram, 30 Apr. 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 5 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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