English

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

 

biorhythm

 noun
noun
BrE BrE//ˈbaɪəʊrɪðəm//
 
; NAmE NAmE//ˈbaɪoʊrɪðəm//
 
[usually plural]
 
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the changing pattern of how physical processes happen in the body, that some people believe affects human behaviour
See the Oxford Advanced American Dictionary entry: biorhythm