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arsenic trisulfide

American  

noun

Chemistry.

  1. a yellow or red crystalline substance, As 2 S 3 , occurring in nature as the mineral orpiment, and used as a pigment king's yellow and in pyrotechnics.

Etymology

Origin of arsenic trisulfide

First recorded in 1905–10

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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