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
21 February 2025
(noun) some artifact that has been restored or reconstructed; “the restoration looked exactly like the original”
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