Chrysophanic acid

Definitions

  • Webster's Revised Unabridged Dictionary
    • 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.
    • ***