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thoria
tho·ri·a T0177800 (thôr′ē-ə)n. See thorium dioxide.
[From thorium.]thoria (ˈθɔːrɪə) n (Elements & Compounds) another name for thorium dioxide[C19: thorium + -a, on the model of magnesia]tho•ri•a (ˈθɔr i ə, ˈθoʊr-)
n. thorium dioxide, a white, heavy, water-insoluble powder, ThO2, used chiefly in incandescent mantles. [1835–45; thori (um) + -a4] thoria
thoria[′thȯr·ē·ə] (inorganic chemistry) thorium dioxide |