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thorium oxide

 - 1 dictionary result

tho⋅ri⋅a

  [thawr-ee-uh, thohr-]
Use thorium oxide in a Sentence
–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) + -a 4
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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