{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]
The Collaborative International Dictionary of English. 2000.
rheic acid — ˈrēik noun Etymology: rheic from rhe (from New Latin Rheum) + ic : chrysophanic acid … Useful english dictionary
rheic — rheic, a. Chem. (ˈriːɪk) [f. rhe um2 + ic, after F. rhéique.] rheic acid = rhein. 1847–54 Webster, s.v. Rhein. Watts Dict. Chem … Useful english dictionary
Rheic — Rhe ic, a. [NL. Rheum rhubarb, Gr. ??? See {Rhubarb}.] (Chem.) Pertaining to, or designating, an acid (commonly called chrysophanic acid) found in rhubarb ({Rheum}). [Obsoles.] [1913 Webster] … The Collaborative International Dictionary of English
Chrysophanic acid — 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… … The Collaborative International Dictionary of English
Rhein (molecule) — For other uses, see Rhein (disambiguation). Rhein … Wikipedia
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… … The Collaborative International Dictionary of English
rhein — 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… … The Collaborative International Dictionary of English
rhubarbarin — 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… … The Collaborative International Dictionary of English
Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… … Wikipedia
Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… … Universalium
