thoria

[ thawr-ee-uh, thohr- ]

noun

, Chemistry.

1. a white, heavy, water-insoluble powder, ThO 2 , used chiefly in incandescent mantles, as the Welsbach gas mantle.

thoria

/ ˈθɔːrɪə /

noun

1. another name for thorium dioxide

Word History and Origins

Origin of thoria¹

First recorded in 1835–45; thori(um) + -a ⁴

Word History and Origins

Origin of thoria¹

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

Example Sentences

Much the best practical source of helium is thorianite, a mineral imported from Ceylon for the manufacture of thoria.

From Project Gutenberg

In other words, it is easier to accelerate the motion of the corpuscles in ceria, thoria and the other ingredients of the mantle, than it is those of carbon.

From Project Gutenberg

Bani Walid’s garrison is composed of the elite 32nd Brigade commanded by Qaddafi’s son Khamis, members of the Legion Thoria secret police, and units of mercenaries from Darfur, Salem said.

From BusinessWeek

Bani Walid’s garrison is composed of the elite 32nd Brigade commanded by Qaddafi’s son Khamis, members of the Legion Thoria secret police, and units of mercenaries from Darfur, Salem said.

From BusinessWeek

The specific gravity of pure thoria is 10.2207 to 10.2198.

From Project Gutenberg