transitive verb roent·gen·ize
variants: less commonly


Definition of roentgenize


  1. 1 :  to make (air or other gas) conductive of electricity by the passage of X rays

  2. 2 :  to subject to the action of X rays (as for the treatment of a tumor)

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of roentgenize

International Scientific Vocabulary roentgen-, röntgen- (from Wilhelm Conrad Röntgen) + -ize

First Known Use: 1902

Seen and Heard

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


a trip made at another's expense

Get Word of the Day daily email!