circadian
[ sur-key-dee-uhn, -kad-ee-, sur-kuh-dee-uhn ]
/ sɜrˈkeɪ di ən, -ˈkæd i-, ˌsɜr kəˈdi ən /
adjective
noting or pertaining to rhythmic biological cycles recurring at approximately 24-hour intervals.
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Origin of circadian
Words nearby circadian
Ciprodex, ciprofloxacin, cir., circ, circa, circadian, circadian rhythm, circannual, Circassia, Circassian, Circassian walnut
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for circadian
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.
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
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for circadian
circadian
[ sər-kā′dē-ən, -kăd′ē-, sûr′kə-dī′ən, -dē′- ]
adj.
Relating to biological variations or rhythms with a cycle of about 24 hours.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.