biorhythm

noun
bio·​rhythm | \ ˈbī-ō-ˌri-t͟həm How to pronounce biorhythm (audio) \

Definition of biorhythm

: an innately determined rhythmic biological process or function (such as sleep behavior) also : the internal mechanism that determines such a process or function

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Other Words from biorhythm

biorhythmic \ ˌbī-​ō-​ˈrit͟h-​mik How to pronounce biorhythmic (audio) \ adjective

Examples of biorhythm in a Sentence

Recent Examples on the Web My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, "What I’ve learned about parenting young ones through dark, early mornings," 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, "What I’ve learned about parenting young ones through dark, early mornings," 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, "What I’ve learned about parenting young ones through dark, early mornings," 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, chicagotribune.com, "What yoga taught me about parenting young ones through dark (early) mornings," 22 Nov. 2019 The biorhythm lasts for one day in rats; four days in macaques; five days in sheep; and six to 12 days in humans. Quanta Magazine, "Teeth May Reveal a Multi-Day Biological Clock," 13 Dec. 2016 Perhaps not coincidentally, these are the only two physiological features that Bromage found to directly correlate with the length of the new biorhythm. Quanta Magazine, "Teeth May Reveal a Multi-Day Biological Clock," 13 Dec. 2016 Deutsche Lufthansa AG last year began using 24 different light settings on its Airbus A350-900 planes to help manage passenger biorhythms during long haul flights. Robert Wall, WSJ, "Airlines Conquer Challenges of Long-Haul Flights. Now Can Passengers?," 24 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biorhythm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biorhythm

1913, in the meaning defined above

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Time Traveler for biorhythm

Time Traveler

The first known use of biorhythm was in 1913

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Statistics for biorhythm

Last Updated

18 May 2020

Cite this Entry

“Biorhythm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biorhythm. Accessed 14 Jul. 2020.

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More Definitions for biorhythm

biorhythm

noun
How to pronounce biorhythm (audio)

English Language Learners Definition of biorhythm

: a natural, repeated pattern of changes that occur in the body and that affect the way a person feels

biorhythm

noun
bio·​rhythm | \ ˈbī-ō-ˌrit͟h-əm How to pronounce biorhythm (audio) \

Medical Definition of biorhythm

: an innately determined rhythmic biological process or function (as sleep behavior) also : an innate rhythmic determiner of such a process or function

Other Words from biorhythm

biorhythmic \ ˌbī-​ō-​ˈrit͟h-​mik How to pronounce biorhythmic (audio) \ adjective
biorhythmicity \ -​rit͟h-​ˈmis-​ət-​ē How to pronounce biorhythmicity (audio) \ noun, plural biorhythmicities

More from Merriam-Webster on biorhythm

Britannica.com: Encyclopedia article about biorhythm

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