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
Triphala is made up of several polyphenols, natural plant compounds known to act as antioxidants.
—
Health, 3 July 2025
The spice contains particular types of antioxidants called polyphenols, which may support heart health.
—Julie Marks, Verywell Health, 2 July 2025
Rainbow berry jam Berries are filled with polyphenols, which are antioxidants found in plants that can help defend against inflammation and boost cell health.
—Michiko Tomioka, CNBC, 6 June 2025
The polyphenols in red grapes, specifically quercetin, myricetin, and resveratrol, may intervene with these diabetic complications.
—Kathi Valeii Published, Verywell Health, 26 June 2025
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.
Health, 3 July 2025
The spice contains particular types of antioxidants called polyphenols, which may support heart health.
—Julie Marks, Verywell Health, 2 July 2025
Rainbow berry jam Berries are filled with polyphenols, which are antioxidants found in plants that can help defend against inflammation and boost cell health.
—Michiko Tomioka, CNBC, 6 June 2025
The polyphenols in red grapes, specifically quercetin, myricetin, and resveratrol, may intervene with these diabetic complications.
—Kathi Valeii Published, Verywell Health, 26 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 20 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share