a mineral, arsenic trisulfide, As2S3, found usually in soft, yellow, foliated masses, used as a pigment.
Origin of orpiment
1350–1400; Middle English
< Old French
< Latin auripigmentum
pigment of gold; see auri-1
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for orpiment
Historical Examples of orpiment
He made some twice with iron, and three times with orpiment.
Orpiment, which is termed ἁρσενικὁν in Greek, is dug up in Pontus.
For example, it seems to have been used as a medium for vermilion and orpiment.
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.
British Dictionary definitions for orpiment
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
Word Origin for orpiment
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
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Word Origin and History for orpiment
late 13c., from Old French orpiment "arsenic trisulphide, yellow color," from Latin auripigmentum, from aurum "gold" (see aureate) + pigmentum "coloring matter, pigment, paint" (see pigment).
Online Etymology Dictionary, © 2010 Douglas Harper