What does circadian rhythm mean?

Definitions for circadian rhythm

Here are all the possible meanings and translations of the word circadian rhythm.

Princeton's WordNet

  1. circadian rhythm(noun)

    a daily cycle of activity observed in many living organisms


  1. circadian rhythm(Noun)

    The "internal body clock" that regulates the (roughly) 24-hour cycle of biological processes in animals and plants.


  1. Circadian rhythm

    A circadian rhythm is any biological process that displays an endogenous, entrainable oscillation of about 24 hours. These rhythms are driven by a circadian clock, and rhythms have been widely observed in plants, animals, fungi and cyanobacteria. The term circadian comes from the Latin circa, meaning "around", and diem or dies, meaning "day". The formal study of biological temporal rhythms, such as daily, tidal, weekly, seasonal, and annual rhythms, is called chronobiology. Although circadian rhythms are endogenous, they are adjusted to the local environment by external cues called zeitgebers, commonly the most important of which is daylight.

U.S. National Library of Medicine

  1. Circadian Rhythm

    The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness.

Suggested Resources

  1. circadian rhythm

    Song lyrics by circadian rhythm -- Explore a large variety of song lyrics performed by circadian rhythm on the Lyrics.com website.


  1. Chaldean Numerology

    The numerical value of circadian rhythm in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of circadian rhythm in Pythagorean Numerology is: 1

Sample Sentences & Example Usage

  1. Sally Augustin:

    Being exposed to daylight helps keep your stress levels and your circadian rhythm in check.

  2. Keri Peterson:

    What this does is, it allows your natural circadian rhythm to re-balance itself, if you use it for a couple of days, it helps to promote sleep-- and it's non-habit forming.

  3. Raj Dasgupta:

    The dietary supplement melatonin is not a potent sleeping aid, it’s good for shifting your circadian rhythm. Usually, we suggest people take it two hours before their desired sleep time.

  4. Dianne Augelli:

    Estrogen works on several different neurotransmitter pathways that may have an impact on the regulation of sleep, and progesterone can have a hypnotic property, fluctuations in these hormones may have an effect on the circadian rhythm.

Images & Illustrations of circadian rhythm

  1. circadian rhythmcircadian rhythmcircadian rhythm

Translations for circadian rhythm

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"circadian rhythm." Definitions.net. STANDS4 LLC, 2018. Web. 19 Mar. 2018. <https://www.definitions.net/definition/circadian rhythm>.

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