thoria

[thawr-ee-uh, thohr-]

tho·ri·a

[thawr-ee-uh, thohr-]
noun Chemistry.
a white, heavy, water-insoluble powder, ThO2, used chiefly in incandescent mantles, as the Welsbach gas mantle.
Also called thorium oxide, thorium dioxide.


Origin:
1835–45; thori(um) + -a4
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Thoria is always a great word to know.
So is mole. Does it mean:
a colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH3, usually produced by the combination of nitrogen and hydrogen gases
the molecular weight of a substance expressed in grams; a gram molecule
Collins
World English Dictionary
thoria (ˈθɔːrɪə)
 
n
another name for thorium dioxide
 
[C19: thorium + -a, on the model of magnesia]

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