biorhythm.
Any cyclic biological or physiological pattern or activity.
Meaning & usage
Any cyclic biological or physiological pattern or activity.
Any of three sinusoidal graphs, normally plotted by a computer, containing a person's birthdate as an origin, that are claimed to provide meaningful information about emotional levels, physical energy levels, and mental or psychic sensitivity.
Where this word comes from
Etymology tree Proto-Indo-European *gʷeyh₃-der. Ancient Greek βῐ́ος (bĭ́os) Ancient Greek βῐο- (bĭo-)der. English bio- Proto-Indo-European *ser-? Proto-Indo-European *srew- Proto-Indo-European *sru-dʰ-mo-s Proto-Hellenic *hrutʰmós Ancient Greek ῥῠθμός (rhŭthmós)bor. Latin rhythmusder. English rhythm English biorhythm First coined 1960, from bio- + rhythm.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.