polyphenol

noun

poly·​phe·​nol ˌpä-lē-ˈfē-ˌnōl 

-fi-ˈnōl

: a polyhydroxy phenol

especially : an antioxidant phytochemical

polyphenolic

ˌpä-lē-fi-ˈnō-lik  -ˈnä- 

adjective

Examples of polyphenol in a Sentence

Recent Examples on the Web

Olive oil is also rich in antioxidants, specifically vitamin E and polyphenols, which help protect cells from stress that can lead to damage and disease.1 With a smoke point of around 375-410 degrees, olive oil is suitable for various cooking methods, including sautéing and baking. —Jamie Johnson, Verywell Health, 5 May 2025

Potassium, fiber, and polyphenols make raspberries allies of cardiovascular health, supporting blood pressure regulation. —Beatrice Zocchi, Vogue, 11 Apr. 2025

With a glycemic index of 15, black olives provide a unique mix of monounsaturated fats and polyphenols that support appetite regulation. —Bryan Robinson, Forbes.com, 7 Apr. 2025

The most nutritional ones share two key traits: high polyphenol content and bitterness (yes, bitterness!). —Dr. Steven Gundry, CNBC, 25 Apr. 2025

Word History

Etymology

International Scientific Vocabulary

First Known Use

1894, in the meaning defined above

Medical 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

polyphenolic

-fi-ˈnō-lik  -ˈnäl-ik 

adjective