Definition of thoria in English:

thoria

noun

Chemistry
  • Thorium dioxide, a white refractory solid used in making gas mantles and other materials for high-temperature applications.

    • ‘The major disadvantage of thoria are the environmental issues due to the exposure to the alpha particles emitted by thorium.’
    • ‘The Austrian chemist, C. von Welsbach, perfected the thoria gas mantle that improves the light output of coal-gas flame and to this day has not been improved significantly.’

Origin

Mid 19th century: from thorium, on the pattern of words such as alumina and magnesia.

Pronunciation:

thoria

/ˈTHôrēə/