Orpiment



[awr-puh-muh nt] /ˈɔr pə mənt/

noun
1.
a mineral, arsenic trisulfide, As 2 S 3 , found usually in soft, yellow, foliated masses, used as a pigment.
/ˈɔːpɪmənt/
noun
1.
a yellow mineral consisting of arsenic trisulphide in monoclinic crystalline form occurring in association with realgar: it is an ore of arsenic. Formula: As2S3
n.

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).

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