Parietic \Pa`ri*et"ic\, a. (Chem.)
Pertaining to, or designating, an acid found in the lichen
Parmelia parietina, and called also chrysophanic acid.
Source: Webster's Revised Unabridged Dictionary (1913)
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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.
Source: Webster's Revised Unabridged Dictionary (1913)
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