catechin

noun

cat·​e·​chin ˈka-tə-ˌkin 

: a crystalline flavonoid compound C₁₅H₁₄O₆ or its derivatives having antioxidant properties and used in dyeing and tanning

Examples of catechin in a Sentence

Recent Examples on the Web

According to Salazar, the drink contains antioxidants, including catechins such as epigallocatechin-3-gallate (EGCG). —Kirsten Nunez, Martha Stewart, 13 Jan. 2026

The tea contains catechins, which improve insulin sensitivity, and epigallocatechin gallate (EGCG), which helps move glucose from the blood into cells to be used for energy. —Jamie Johnson, Verywell Health, 7 Jan. 2026

Walnuts Walnuts contain antioxidant compounds such as tocopherols and polyphenols like catechins, resveratrol, and ellagitannins.2 These nuts also contain a good amount of magnesium, potassium, iron, calcium, sodium, and B vitamins.9 8. —Cathy Cassata, Health, 29 Dec. 2025

For example, its vitamin K content could interfere with blood-thinning medications, and its catechins may affect iron absorption when consumed in large amounts alongside meals. —Daryl Austin, USA Today, 29 Dec. 2025

Word History

Etymology

International Scientific Vocabulary catechu + -in entry 1

First Known Use

1853, in the meaning defined above

Rhymes for catechin

• aneurin
• crystallin
• eosin
• mandolin
• porphyrin
• underpin
• violin
• akin
• auxin
• buckskin
• chagrin
• deerskin

Medical Definition

catechin

noun

cat·​e·​chin ˈkat-ə-ˌkin 

: 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