arsenic trioxide

(redirected from Arsenous acid)
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
It occurs naturally in inorganic and organic forms, such as arsenic acid (H3AsO4) and arsenous acid (H3AsO3) and their dissociation derivatives (H2AsO4 -, HAsO4 2-, H2AsO3 - and HAsO3 2-)arsenites, arsenates, monomethylarsenic acid (MMAA), and dimethylarsenic acid (DMAA) [2].
Misra, "The silver ion catalyses oxidation of arsenous acid by [S.sub.2][O.sup.2-.sub.8]," Bulletin of the Chemical Society of Japan, vol.
2008) because arsenous acid (the predominant form of arsenic in flooded rice paddies) is indistinguishable from silicic acid to the rice plant.