/ Dictionary / Index R radioautography: Meaning and Definition of Find definitions for: ra•di•o•au•tog•ra•phy Pronunciation: (rā"dē-ō-ô-tog'ru-fē), [key] — n. autoradiography. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radioautograph radio beacon Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language