thorium dioxide

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thorium dioxide

n.
A heavy white powder, ThO2, obtained from monazite and used mainly in ceramics, glass, and gas mantles, as a catalyst, and as a radiopaque diagnostic aid. Also called thoria, thorium oxide.
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.

thorium dioxide

n
(Elements & Compounds) a heavy insoluble white powder used in incandescent mantles. Formula: ThO2. Also called: thoria
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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