CHRYSOPHANIC a.
om, or resembling, chrysophane. Chrysophanic acid (Chem.), a yellow crystalline substance extracted from rhubarb, yellow dock, sienna, chrysarobin, etc., and shown to be a derivative of an anthracene. It is used in the treatment of skin diseases; -- called also rhein, rheic acid, rhubarbarin, etc.
CITRIC a.
e citron or lemon; as, citric acid. Citric acid (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberies, etc., as a white crystalline substance, having a pleasant sour taste.