/ Dictionary / Index R roentgeno-: Meaning and Definition of Find definitions for: roentgeno- Pronunciation: [key] a combining form ofroentgenometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. roentgenize roentgenogram Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language