Definition of aerobics noun from the Oxford Advanced Learner's Dictionary

 

aerobics

 noun
noun
BrE BrE//eəˈrəʊbɪks//
 
; NAmE NAmE//eˈroʊbɪks//
 
[uncountable] Exercise
 
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physical exercises intended to make the heart and lungs stronger, often done in classes, with music to do aerobics I go to aerobics every Monday. See related entries: Exercise
See the Oxford Advanced American Dictionary entry: aerobics