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circadian
[ sur-key-dee-uhn ]
/ sɜrˈkeɪ di ən /
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adjective Physiology.
of or relating to a biorhythm or regular biological cycle occurring once every 24 hours, such as waking and sleeping: Exposure to blue light at night can disrupt your circadian rhythm, making your biological clock think it's earlier in the day rather than time for bed.He is doing research related to the circadian cycling of hormones.Compare infradian, ultradian.
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See also biological clock (def. 1).
Words nearby circadian
Cipro, ciprofloxacin, cir., circ, circa, circadian, circadian rhythm, circannual, Circassia, Circassian, Circassian walnut
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How to use circadian in a sentence
British Dictionary definitions for circadian
circadian
/ (sɜːˈkeɪdɪən) /
adjective
of or relating to biological processes that occur regularly at about 24-hour intervals, even in the absence of periodicity in the environmentSee also biological clock
Word Origin for circadian
C20: from Latin circa about + diēs day
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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