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circadian Syllabification: cir·ca·di·an
Pronunciation: /sərˈkādēən/

Definition of circadian in English:


(Of biological processes) recurring naturally on a twenty-four-hour cycle, even in the absence of light fluctuations: a circadian rhythm
More example sentences
  • In continuous light, circadian growth rhythms were detectable for up to 2 weeks.
  • While discussing the mechanisms underlying circadian rhythms, it would be well worth mentioning their genetic basis.
  • Terry learned to eat in tune with his natural circadian rhythms.


1950s: formed irregularly from Latin circa 'around' + dies 'day'.

Words that rhyme with circadian

Acadian, Akkadian, Arcadian, Barbadian, Canadian, Grenadian, Hadean, Orcadian, Palladian, radian, steradian
Definition of circadian in:
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