orpiment definition

  • noun:
    • Arsenic trisulfide, As2S3, a yellow mineral used as a pigment.
    • arsenic trisulphide, occurring naturally in crystals or huge build up, previously made use of as a dye or pigment
    • Arsenic sesquisulphide, produced unnaturally as an amorphous lemon-yellow dust, and happening naturally as a yellow crystalline mineral; -- formerly known as auripigment. It is utilized in king's yellowish, in white Indian fire, and in certain technical procedures, as indigo printing.
    • Arsenic trisulphid, As2S3.
    • a yellow mineral happening in conjunction with realgar; an ore of arsenic

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