Gly*cyr"rhi*zin (?), n. [Cf. F. glycyrrhizine. See Glycyrrhiza.] (Chem.) A glucoside found in licorice root (Glycyrrhiza), in monesia bark (Chrysophyllum), in the root of the walnut, etc., and extracted as a yellow, amorphous powder, of a bittersweet taste.