radiologyPronunciation: /reɪdɪˈɒlədʒi/Translate radiology | into French | into Italian Definition of radiology noun [mass noun] the science dealing with X-rays and other high-energy radiation, especially the use of such radiation for the diagnosis and treatment of disease. Derivatives radiologicPronunciation: /-əˈlɒdʒɪk/ adjective radiologicalPronunciation: /-əˈlɒdʒɪk(ə)l/ adjective radiologically adverb radiologist noun radiology in other Oxford dictionaries Definition of radiology in the US English dictionary