thoria
[thawr-ee-uh, thohr-]
- a white, heavy, water-insoluble powder, ThO2, used chiefly in incandescent mantles, as the Welsbach gas mantle.
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Origin of thoria
Also called thorium oxide, thorium dioxide.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for thoria
Historical Examples
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 Beringer
Dissolve; 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 Beringer
With 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.
thoria
- another name for thorium dioxide
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Word Origin
C19: thorium + -a, on the model of magnesia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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