circadian

cir·ca·di·an

adj \sər-ˈkā-dē-ən\

Definition of CIRCADIAN

: being, having, characterized by, or occurring in approximately 24-hour periods or cycles (as of biological activity or function) <circadian rhythms in activity>

Origin of CIRCADIAN

Latin circa about + dies day + English ²-an — more at deity

First Known Use: 1959

Other Physiology Terms

eructation, flux, gustatory, menarche, myopia, senescence, torpor

Rhymes with CIRCADIAN

Acadian, Akkadian, arcadian, Arcadian, Barbadian, Canadian, Grenadian, Orcadian, Palladian