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circadian
[ sur-key-dee-uhn, -kad-ee-, sur-kuh-dee-uhn ]
/ sɜrˈkeɪ di ən, -ˈkæd i-, ˌsɜr kəˈdi ən /
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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. 2022
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
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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.