Orpiment

Definition of Orpiment

Or´pi`ment
n.1.(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.

Related Words

arsenic, As, atomic number 33, mineral
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