Dictionary.com
definitions

biorhythm

[ bahy-oh-rith-uh m ]
/ ˈbaɪ oʊˌrɪð əm /
SEE MORE SYNONYMS FOR biorhythm ON THESAURUS.COM

noun

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

Nearby words

  1. bioregion,
  2. bioregionalism,
  3. bioremediation,
  4. bioresearch,
  5. bioreserve,
  6. biorhythmics,
  7. bios,
  8. biosafety,
  9. bioscience,
  10. bioscope

Origin of biorhythm

First recorded in 1960–65; bio- + rhythm
Related formsbi·o·rhyth·mic, adjectivebi·o·rhyth·mic·i·ty [bahy-oh-rith-mis-i-tee] /ˌbaɪ oʊ rɪðˈmɪs ɪ ti/, nounbi·o·rhyth·mist, bi·o·rhyth·mi·cist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for biorhythm

biorhythm

/ (ˈbaɪəʊˌrɪðəm) /

noun

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
Derived Formsbiorhythmic, adjectivebiorhythmically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for biorhythm

biorhythm

n.

also bio-rhythm, 1960, from bio- + rhythm. Related: Biorhythmic.

Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for biorhythm

biorhythm

[ bī′ō-rĭð′əm ]

n.

A biologically inherent cyclic variation or recurrence of an event or state, such as sleep cycles and circadian rhythms.
Related formsbi′o•rhyth′mic (-rĭð′mĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for biorhythm

biorhythm

[ bī′ō-rĭð′əm ]

A recurring biological process, such as sleep, that is controlled by the circadian rhythms of an organism. See more at circadian rhythm.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.