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
Hebridean seaweed contains a host of polyphenol antioxidants, vitamins, minerals, trace elements and amino acids which nurture and protect the skin.
—
Angelina Villa-Clarke, Forbes.com, 21 July 2025
Coffee also has polyphenols (e.g., chlorogenic acid) and flavonoids with antioxidant effects.11
Tea, like coffee, contains antioxidants and other bioactive compounds that may benefit your health.
—Brittany Lubeck, Verywell Health, 17 July 2025
Catechins are a type of polyphenol flavonoid that have strong antioxidant properties.
—Brittany Poulson, People.com, 8 July 2025
Quite the opposite: Researchers believe the fiber, antioxidants, and polyphenols—especially a compound called mangiferin—present in mangos could help blunt blood sugar spikes and improve how cells respond to insulin.
—Lauren Manaker Ms, Health, 28 June 2025
See All Example Sentences for polyphenol
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Angelina Villa-Clarke, Forbes.com, 21 July 2025
Coffee also has polyphenols (e.g., chlorogenic acid) and flavonoids with antioxidant effects.11
Tea, like coffee, contains antioxidants and other bioactive compounds that may benefit your health.
—Brittany Lubeck, Verywell Health, 17 July 2025
Catechins are a type of polyphenol flavonoid that have strong antioxidant properties.
—Brittany Poulson, People.com, 8 July 2025
Quite the opposite: Researchers believe the fiber, antioxidants, and polyphenols—especially a compound called mangiferin—present in mangos could help blunt blood sugar spikes and improve how cells respond to insulin.
—Lauren Manaker Ms, Health, 28 June 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 29 Jul. 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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