Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

thoria

play
noun tho·ria \ˈthȯr-ē-ə\

Definition of thoria

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



Origin of thoria

New Latin, from thorium + -a


First Known Use: circa 1841


Seen and Heard

What made you want to look up thoria? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

marked by grandiloquent style

Get Word of the Day daily email!