thoria

[ thawr-ee-uh, thohr- ]
/ ˈθɔr i ə, ˈθoʊr- /

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 of thoria

First recorded in 1835–45; thori(um) + -a4

Words nearby thoria

thorazine, thoreau, thoreau, henry david, thorez, thorfinn karlsefni, thoria, thorianite, thorite, thorium, thorium dioxide, thorium series

British Dictionary definitions for thorium dioxide (1 of 2)

thorium dioxide

noun

a heavy insoluble white powder used in incandescent mantles. Formula: ThO 2 Also called: thoria

British Dictionary definitions for thorium dioxide (2 of 2)

thoria
/ (ˈθɔːrɪə) /

noun

another name for thorium dioxide

Word Origin for thoria

C19: thorium + -a, on the model of magnesia