cat·​e·​chin ˈka-tə-ˌkin How to pronounce catechin (audio)
: a crystalline flavonoid compound C15H14O6 or its derivatives having antioxidant properties and used in dyeing and tanning

Example Sentences

Recent Examples on the Web Green Tea One of the active components of green tea is catechins, a type of flavonoid that is present in high concentrations in green tea. Discover Magazine, 29 Apr. 2023 Green tea contains catechins, antioxidants that can protect the brain from disease and help people age well. Alexa Mikhail, Fortune Well, 16 Mar. 2023 The catechin epigallocatechin gallate (EGCG). Ola Faleti,, 17 Apr. 2021 Other small studies have suggested potential beneficial anti-viral activity of gargling with green tea or solutions containing catechins, active ingredients of green tea, or with apple cider vinegar. Neal Naito, New York Times, 29 Mar. 2020 Matcha is high in a catechin called EGCG (epigallocatechin gallate), which is believed to have cancer-fighting effects on the body. Alexandra Sifferlin, Time, 8 Mar. 2018 Green or white tea: These drinks contain compounds called catechins, which block the creation of histamines (the chemicals that cause allergy symptoms). Kim Tranell, Redbook, 25 Feb. 2013 Matcha, like other green teas, contains a class of antioxidants called catechins. Alexandra Sifferlin, Time, 8 Mar. 2018 The polyphenols — especially catechins found in green tea — may stimulate the production and activity of specific cells associated with combating viruses. Theresa Shank, Rd, Ldn,, 29 Jan. 2018 See More

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Word History


International Scientific Vocabulary catechu + -in entry 1

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of catechin was in 1853

Dictionary Entries Near catechin

Cite this Entry

“Catechin.” Dictionary, Merriam-Webster, Accessed 6 Jun. 2023.

Medical Definition


cat·​e·​chin ˈkat-ə-ˌkin How to pronounce catechin (audio)
: a crystalline compound C15H14O6 that is related chemically to the flavones, is found in catechu, and is used in dyeing and tanning
also : a derivative of this compound
Last Updated: - Updated example sentences
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