HYOSCYAMINE

[hy.o.scy.a.mine] n [G Hyoscyamin, fr. NL Hyoscyamus, genus of herbs, fr. L, henbane, fr. Gk hyoskyamos, lit., swine's bean, fr. hyos (gen. of hys swine) + kyamos bean--more at sow] (1858): a poisonous crystalline alkaloid of which atropine is a racemic mixture; esp: its levorotatory form found esp. in the plants belladonna and henbane and used similarly to atropine