aerobicsPronunciation: /ɛːˈrəʊbɪks/Translate aerobics | into French | into German | into Italian | into Spanish Definition of aerobics noun [often treated as singular] vigorous exercises designed to increase cardiovascular efficiency. Derivatives aerobicistPronunciation: /ɛːˈrəʊbɪsɪst/ noun aerobics in other Oxford dictionaries Definition of aerobics in the US English dictionary