from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Arsenic trisulfide, As2S3, a yellow mineral used as a pigment.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. arsenic trisulphide, occurring naturally in crystals or massive deposits, formerly used as a dye or pigment

from the GNU version of the Collaborative International Dictionary of English

  • n. Arsenic sesquisulphide, produced artificially as an amorphous lemon-yellow 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.

from The Century Dictionary and Cyclopedia

  • n. Arsenic trisulphid, As2S3.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a yellow mineral occurring in conjunction with realgar; an ore of arsenic


Middle English, from Old French, from Latin auripigmentum : aurum, gold + pigmentum, pigment; see pigment.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French, from Latin auripigmentum ("orpiment"), from aurum ("gold") + pigmentum ("pigment"). (Wiktionary)



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  • Another usage:
    "The brilliant white of camphor, the green of brass filings, a rosy pink, a most uncommon violet derived from orpiment, and so it went at perfectly regular intervals... to the final prodigious blast from the aftermost carronade, crammed with a deafening, blinding mixture of pedok, datang and colophony."
    --Patrick O'Brian, The Thirteen Gun Salute, 211

    March 4, 2008

  • "Jack was speaking to the gunner at the time, explaining that the private powder in the kegs marked X was mixed with red orpiment, and XX with antimony or copper, while still others had lycoperdium or camphor or strontium..."
    --Patrick O'Brian, The Ionian Mission, 50

    February 11, 2008

  • orpiment golden pigment: or-pi(g)ment: orp also has a conatation of the arsenic it contains

    January 14, 2007