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Circadian rhythm
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Definition
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Circadian rhythm
Definition
WordNet
noun
(1)
A daily cycle of activity observed in many living organisms
WiktionaryText
Etymology
From the Latin
circa
, meaning "around" and dies, "day", meaning literally, "around a day".
Noun
The "internal
body
clock
" that regulates the (roughly) 24-hour cycle of biological processes in animals and plants.
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