The Collaborative International Dictionary
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.
Our orpiment and sublimed mercurie.
--Chaucer.
Red orpiment, realgar; the red sulphide of arsenic.
Yellow orpiment, king's yellow.
Usage examples of "red orpiment".
Jeremiah found himself indoors, perfecting his Draftsmanship, bending all day over the work-table, grinding and mixing his own Inks, sittings and splashes ev'rywhere of King's Yellow, Azure, red Orpiment, Indian lake, Verdigris, Indigo, and Umber.
It was the clerk of cheque that gave me wind of it- he means to marry the widow, and although it is a little mixed with red orpiment and so on the ordnance-master swears it is sound.