biorhythm

American  

[bahy-oh-rith-uhm] / ˈbaɪ oʊˌrɪð əm /

noun

1. Physiology. an innate periodicity in an organism's physiological processes, as sleep and wake cycles.

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biorhythm British  

/ ˈbaɪəʊˌrɪðəm /

noun

1. a cyclically recurring pattern of physiological states in an organism or organ, such as alpha rhythm or circadian rhythm; believed by some to affect physical and mental states and behaviour

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biorhythm Scientific  

/ bī′ō-rĭth′əm /

1. A recurring biological process, such as sleep, that is controlled by the circadian rhythms of an organism.

2. See more at circadian rhythm

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Other Word Forms

• biorhythmic adjective
• biorhythmically adverb
• biorhythmicist noun
• biorhythmicity noun
• biorhythmist noun

Etymology

Origin of biorhythm

First recorded in 1960–65; bio- + rhythm

Example Sentences

There have been times in practice when Gilmer’s biorhythm monitors prompted coaches to make him take a couple of plays off.

From Los Angeles Times • Nov. 5, 2024

She used a commercially available biorhythm kit for a year, while also making daily observations about herself.

From New York Times • Mar. 21, 2019

I am a nightbird whose natural biorhythm had to be sublimated for my entire adult working life.

From New York Times • Jan. 30, 2018

All these deductions are based on the theory of biorhythm, the fast-growing pseudoscience that is more fun than astrology and not as messy as reading chicken entrails.

From Time Magazine Archive

Her eyes shone like he was offering her the key to the biorhythm lab at Johns Hopkins.

From "From Twinkle, with Love" by Sandhya Menon

Related Words

• circadian rhythm