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thoria
[ thawr-ee-uh, thohr- ]
/ ˈθɔr i ə, ˈθoʊr- /
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noun Chemistry.
a white, heavy, water-insoluble powder, ThO2, used chiefly in incandescent mantles, as the Welsbach gas mantle.
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Also called thorium oxide, thorium dioxide.
Words nearby thoria
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use thoria in a sentence
Thoria which has been ignited is not readily soluble in acids.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob BeringerDissolve; and from the hydrochloric acid solution precipitate the thoria (if any) with ammonium oxalate.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob BeringerWith thoria the shrinkage is smaller than with any other known substance, and it possesses very high refractory powers.
Much the best practical source of helium is thorianite, a mineral imported from Ceylon for the manufacture of thoria.
British Dictionary definitions for thoria
Word Origin for thoria
C19: thorium + -a, on the model of magnesia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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