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Preferred term

circadian rhythm  

Definition

  • Circadian rhythms refer to regular or rhythmic variations in biological and behavioral measures approximately (“circa”) on a 24-hour or daily (“dian”) timing basis. Virtually all biological and behavioral measures taken over time show circadian rhythms. [Source: Encyclopedia of Human Development; Circadian Rhythm]

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URI

https://concepts.sagepub.com/social-science/concept/circadian_rhythm

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