astrophysicsPronunciation: /astrə(ʊ)ˈfɪzɪks/Translate astrophysics | into German | into Italian Definition of astrophysics noun [treated as singular] the branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations. Derivatives astrophysical adjective astrophysicistPronunciation: /-sɪst/ noun astrophysics in other Oxford dictionaries Definition of astrophysics in the US English dictionary
