arsenic trioxide

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ar·se·nic trioxide

 (är′sə-nĭk)
n.
A poisonous, white amorphous powder, As2O3, used in insecticides, rat poisons, weed killers, pigments, and preservatives for hides and wood.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

arsenic trioxide

n
(Elements & Compounds) a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3. Also called: arsenic
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ar′senic triox′ide


n.
a white, tasteless, poisonous powder, As2O3, used chiefly in the manufacture of pigments and glass and as an insecticide or weed-killer.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.arsenic trioxide - a white powdered poisonous trioxide of arsenicarsenic trioxide - a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
trioxide - an oxide containing three atoms of oxygen in the molecule
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References in periodicals archive ?
Extensive waste deposits in tailings and ash from the ignition oven at the abandoned mine have been left in the surroundings and have been concentrated into arsenolite. The abandoned mine installations are located in the small town of El Triunfo (around 500 inhabitants); therefore, these inhabitants are likely to be exposed to the tailings.
Arsenolite, as an alteration product in strongly weathered ores, occurs very commonly in fissures.