catechin
(noun) a tannic acid that is extracted from black catechu as a white crystalline substance
Source: WordNet® 3.1
catechin (plural catechins)
(organic compound) A flavanol derived from catechol (2R,3S)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
• atechnic
Source: Wiktionary
Cat"e*chin, n. (Chem.)
Definition: One of the tannic acids, extracted from catechu as a white, crystaline substance; -- called also catechuic acid, and catechuin.
Source: Webster’s Unabridged Dictionary 1913 Edition
10 June 2025
(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”
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