poly·​phe·​nol | \ ˌpä-lē-ˈfē-ˌnōl How to pronounce polyphenol (audio) , -fi-ˈnōl\

Definition of polyphenol

: a polyhydroxy phenol especially : an antioxidant phytochemical

Keep scrolling for more

Other Words from polyphenol

polyphenolic \ ˌpä-​lē-​fi-​ˈnō-​lik How to pronounce polyphenolic (audio) , -​ˈnä-​ How to pronounce polyphenolic (audio) \ adjective

Examples of polyphenol in a Sentence

Recent Examples on the Web The polyphenols in the tea can promote healthy cell turnover. Caroline Picard, Good Housekeeping, "A Sunburn on Your Lips Is Especially Dangerous – Here’s How to Protect Them," 10 May 2019 Research has also found that coffee contains several antioxidant compounds, including polyphenols, that seem to have healthy anti-inflammatory effects. Markham Heid, Time, "Should Parents Worry About Kids Drinking Coffee?," 5 Sep. 2019 Plants also contain a variety of phytochemicals—bioactive compounds including flavonoids, carotenoids, and polyphenols that, some studies suggest, may be linked to lower risk of chronic diseases like cancer and cardiovascular disease. Carolyn L. Todd, SELF, "Does It Make a Difference if You Get Your Protein from Plants or Animals?," 28 Aug. 2019 Both oils are high in heart-healthy monounsaturated fats, but olive oil contains polyphenols, which have antioxidant benefits. Carrie Dennett, Washington Post, "Herring and pumpernickel, anyone? Try the Nordic diet.," 12 Aug. 2019 The plan, based on the 2017 book The Coffee Lover’s Diet by medical doctor Bob Arnot, involves drinking a minimum of three cups of light roast coffee daily, due to its higher polyphenol antioxidant content. Cynthia Sass, Mph, Health.com, "Can the Coffee Diet Really Help With Weight Loss—and Is It Safe?," 19 July 2019 The silty green compound is jam-packed with powerful antioxidants, specifically catechin polyphenols. Sarah Kinonen, Allure, "12 Skin-Care Products Infused With Matcha Green Tea," 23 Oct. 2018 Its main compounds are polyphenols, known as limonoids, and naringenin, which help when killing bacteria in laundry, cleaning carpet spills (that could lead to mold growth!), and for disinfecting and sterilizing spaces. Cate Geiger, Country Living, "How to Get Rid of Black Mold Naturally," 23 May 2019 Also, florets provide two to three times more healthful glucosinolates and about twice as many polyphenols compared to the stems. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "Why You Should Eat Broccoli Every Single Day," 21 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polyphenol.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of polyphenol

1894, in the meaning defined above

History and Etymology for polyphenol

International Scientific Vocabulary

Keep scrolling for more

Learn More about polyphenol

Statistics for polyphenol

Last Updated

26 Oct 2019

Time Traveler for polyphenol

The first known use of polyphenol was in 1894

See more words from the same year

Keep scrolling for more

More Definitions for polyphenol


poly·​phe·​nol | \ ˌpäl-i-ˈfē-ˌnōl, -ˌnȯl, -fi-ˈ How to pronounce polyphenol (audio) \

Medical Definition of polyphenol

: a polyhydroxy phenol especially : an antioxidant phytochemical (as chlorogenic acid) that tends to prevent or neutralize the damaging effects of free radicals

Other Words from polyphenol

polyphenolic \ -​fi-​ˈnō-​lik How to pronounce polyphenolic (audio) , -​ˈnäl-​ik How to pronounce polyphenolic (audio) \ adjective

Comments on polyphenol

What made you want to look up polyphenol? Please tell us where you read or heard it (including the quote, if possible).


strength of mind

Get Word of the Day daily email!

Test Your Vocabulary

Pass the Little Ribbons: A Pasta Word Quiz

  • pasta resembling wheels with spokes
  • Match the pasta to its meaning in English: Rotelle
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!