/ Dictionary / Index O osteoradionecrosis: Meaning and Definition of Find definitions for: os•te•o•ra•di•o•ne•cro•sis Pronunciation: (os"tē-ō-rā"dē-ō-nu-krō'sis, -ne-), [key] — n. Pathol. bone tissue death induced by radiation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. osteoporotic osteosarcoma Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language