Search Result for "catechin": 
Wordnet 3.0

NOUN (1)

1. a tannic acid that is extracted from black catechu as a white crystalline substance;

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2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Catechin \Cat"e*chin\, n. (Chem.) One of the tannic acids (C15H14O6), extracted from catechu as a white, crystalline substance; -- called also catechuic acid, catechinic acid, cyanidol, and catechuin. It is a flavonoid found generally in higher woody plants, and is used in dyeing and tanning. [1913 Webster +PJC]
WordNet (r) 3.0 (2006):

catechin n 1: a tannic acid that is extracted from black catechu as a white crystalline substance