thorium dioxide

noun

Medical Definition of thorium dioxide

: a refractory crystalline compound obtained usually as a dense white powder and formerly used as a contrast medium in radiography

called also thorium oxide, thorotrast

Learn More About thorium dioxide

Dictionary Entries Near thorium dioxide

thorium

thorium dioxide

thorn apple

See More Nearby Entries 

Cite this Entry

“Thorium dioxide.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/thorium%20dioxide. Accessed 16 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!