Biorhythm Definition

bīō-rĭthəm
biorhythms
noun
Any biological cycle that involves periodic changes in blood pressure, body temperature, etc.: analyzed by some to predict behavior, temperament, etc.
Webster's New World
An innate, cyclical biological process or function.
American Heritage Medicine

(biology) Any cyclic biological or physiological pattern or activity.

Wiktionary

(pseudoscience) Any of three sinusoidal graphs, normally plotted by computer, having a person's birthdate as origin, that that are supposed to give meaningful information about emotional levels, physical energy levels, and mental/psychic sensitivity.

Wiktionary

Other Word Forms of Biorhythm

Noun

Singular:
biorhythm
Plural:
biorhythms

Origin of Biorhythm

  • First coined 1960, from bio- +‎ rhythm

    From Wiktionary

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biorhythm