arsenic trisulfide, AsS, having a lemon-yellow color and a resinous luster: it is used as a pigment
Origin of orpimentOld French ; from Classical Latin auripigmentum, pigment of gold: see auric and amp; pigment
Arsenic trisulfide, As2S3, a yellow mineral used as a pigment.
Origin of orpimentMiddle English, from Old French, from Latin auripigmentum : aurum, gold + pigmentum, pigment; see pigment.
(countable and uncountable, plural orpiments)