catechin
Cat"e*chin, n. (Chem.) Defn: One of the tannic acids, extracted from catechu as a white, crystaline substance; -- called also catechuic acid, and catechuin.
Cat"e*chin, n. (Chem.) Defn: One of the tannic acids, extracted from catechu as a white, crystaline substance; -- called also catechuic acid, and catechuin.