Orpiment

word

1. Noun

Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow 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.

2. Noun

a yellow mineral occurring in conjunction with realgar; an ore of arsenic
Vocabulary classified under Chemistry
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