English dictionary
orpiment
/'/O/rp/@/m/@/nt/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a yellow mineral occurring in conjunction with realgar; an ore of arsenic
Source: WordNet 3.0
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Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called <i>auripigment</i>. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing.
Source: webster1913