- a mineral, arsenic trisulfide, As2S3, found usually in soft, yellow, foliated masses, used as a pigment.
Origin of orpiment
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Examples from the Web for orpiment
He made some twice with iron, and three times with orpiment.The Phantom World
Orpiment, which is termed ἁρσενικὁν in Greek, is dug up in Pontus.Ten Books on Architecture
For example, it seems to have been used as a medium for vermilion and orpiment.Illumination and its Development in the Present Day
Treacle, honey, or moist sugar, mixed with about 1⁄12th their weight of Kings yellow or orpiment.
To the unctuous juices belong these species: sulphur, bitumen, realgar and orpiment.De Re Metallica
- a yellow mineral consisting of arsenic trisulphide in monoclinic crystalline form occurring in association with realgar: it is an ore of arsenic. Formula: As 2 S 3
C14: via Old French from Latin auripigmentum gold pigment
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for orpiment
Online Etymology Dictionary, © 2010 Douglas Harper