circadian
[sur-key-dee-uh n, -kad-ee-, sur-kuh-dee-uh n]
- noting or pertaining to rhythmic biological cycles recurring at approximately 24-hour intervals.
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Origin of circadian
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for circadian
Contemporary Examples
Bright light is what keeps our circadian rhythms in good order.
Lighting signals your body's circadian rhythm and can have a strong effect on your mood.
“One of the most important things you can do for your sleep is to have a routine to keep your circadian rhythm normal,” says Suh.
circadian
- 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
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Word Origin
C20: from Latin circa about + diēs day
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for circadian
Online Etymology Dictionary, © 2010 Douglas Harper
circadian
(sər-kā′dē-ən, -kăd′ē-, sûr′kə-dī′ən, -dē′-)- Relating to biological variations or rhythms with a cycle of about 24 hours.
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The American Heritage® Stedman's Medical Dictionary
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