Chrysophanic

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Parietic \Pa`ri*et"ic\, a. (Chem.)
     Pertaining to, or designating, an acid found in the lichen
     {Parmelia parietina}, and called also {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]