radiobiology Syllabification: (ra·di·o·bi·ol·o·gy)Pronunciation: /ˌrādēōbīˈäləjē/Definition of radiobiology noun the branch of biology concerned with the effects of ionizing radiation on organisms and the application in biology of radiological techniques. Derivatives radiobiologicalPronunciation: /-ˌbīəˈläjikəl/ adjective radiobiologicallyPronunciation: /-ˌbīəˈläjik(ə)lē/ adverb radiobiologistPronunciation: /-jist/ noun radiobiology in other Oxford dictionaries Definition of radiobiology in the British & World English dictionary