3 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Rhein \Rhe"in\, n. (Chem.) Chrysophanic acid. [1913 Webster] From The Collaborative International Dictionary of English v.0.48 [gcide]: Chrysophanic \Chrys`o*phan"ic\, a. Pertaining to, or derived from, or resembling, chrysophane. [1913 Webster] {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. [1913 Webster] From WordNet (r) 2.0 [wn]: Rhein n : a major European river carrying more traffic than any other river in the world; flows into the North Sea [syn: {Rhine}, {Rhine River}]
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