orpiment

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noun or·pi·ment \ˈȯr-pə-mənt\

Definition of orpiment

  1. :  a rare orange to lemon-yellow mineral consisting of a native trisulfide of arsenic

Origin and Etymology of orpiment

Middle English, from Anglo-French, from Latin auripigmentum, from aurum + pigmentum pigment


First Known Use: 14th century


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a dividing ridge between drainage areas

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