Simple Definition of biorhythm
: a natural, repeated pattern of changes that occur in the body and that affect the way a person feels
Full Definition of biorhythm
: an innately determined rhythmic biological process or function (as sleep behavior); also : the internal mechanism that determines such a process or function
First Known Use of biorhythm
Medical Definition of biorhythm
Seen and Heard
What made you want to look up biorhythm? Please tell us where you read or heard it (including the quote, if possible).