/ Dictionary / Index R roentgenize: Meaning and Definition of Find definitions for: roent•gen•ize Pronunciation: (rent'gu-nīz", -ju-, runt'-), [key] — -ized, -iz•ing. to subject to the action of x-rays. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Roentgen roentgeno- Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language