chrys·o·phan·ic acid /ˌkrɪsəˌfænɪk-/ 名詞
  大黃酸,大黃酚
  Ru·mi·cin n. Chem. A yellow crystalline substance found in the root of yellow dock (Rumex crispus) and identical with chrysophanic acid.
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  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.
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