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 ]
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