/ Dictionary / Index R radiobiology: Meaning and Definition of Find definitions for: ra•di•o•bi•ol•o•gy Pronunciation: (rā"dē-ō-bī-ol'u-jē), [key] — n. the branch of biology dealing with the effects of radiation on living matter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: radiobiology (Thesaurus) radio beam radiobroadcast Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language