2 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Orpiment \Or"pi*ment\, n. [F., fr. L. auripigmentum; aurum gold + pigmentum pigment. Cf. {Aureate}, {Pigment}, {Orpin}, {Orpine}.] (Chem.) Arsenic sesquisulphide, produced artificially as an amorphous lemon-yellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called {auripigment}. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. [1913 Webster] Our orpiment and sublimed mercurie. --Chaucer. [1913 Webster] {Red orpiment}, realgar; the red sulphide of arsenic. {Yellow orpiment}, king's yellow. [1913 Webster] From WordNet (r) 2.0 [wn]: orpiment n : a yellow mineral occuring in conjunction with realgar; an ore of arsenic
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