【化】 大黄根酸; 3-甲基-1,8-二羟基蒽醌(大黄酸为rnein,非本品)
【医】 大黄酸, 大黄酚

Chrysophanic \Chrys`o*phan"ic\, a.
Pertaining to, or derived from, 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.

Rumicin \Ru"mi*cin\, n. (Chem.)
A yellow crystalline substance found in the root of yellow
dock ({Rumex crispus}) and identical with {chrysophanic
acid}.