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thoria
[ thawr-ee-uh, thohr- ]
noun
, Chemistry.
- a white, heavy, water-insoluble powder, ThO 2 , used chiefly in incandescent mantles, as the Welsbach gas mantle.
thoria
/ ˈθɔːrɪə /
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Word History and Origins
Origin of thoria1
C19: thorium + -a, on the model of magnesia
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Example Sentences
Thoria which has been ignited is not readily soluble in acids.
From Project Gutenberg
Dissolve; and from the hydrochloric acid solution precipitate the thoria (if any) with ammonium oxalate.
From Project Gutenberg
With thoria the shrinkage is smaller than with any other known substance, and it possesses very high refractory powers.
From Project Gutenberg
Much the best practical source of helium is thorianite, a mineral imported from Ceylon for the manufacture of thoria.
From Project Gutenberg
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