1 thoria | Definition of thoria
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thoria

noun
tho·​ria | \ ˈthȯr-Ä“-É™ How to pronounce thoria (audio) \

Definition of thoria

: a powdery white oxide of thorium ThO2 used especially as a catalyst and in crucibles and refractories and optical glass

First Known Use of thoria

circa 1841, in the meaning defined above

History and Etymology for thoria

New Latin, from thorium + -a

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