Nearby Words
adjective
noting or pertaining to rhythmic biological cycles recurring at approximately 24-hour intervals.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To circadian
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Circadian
is always a great word to know.
So is interrobang. Does it mean:
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| the offspring of a zebra and a donkey. |
Collins
World English Dictionary
| circadian (sɜːˈkeɪdɪən) | |
| —adj | |
| See also biological clock of or relating to biological processes that occur regularly at about 24-hour intervals, even in the absence of periodicity in the environment | |
| [C20: from Latin circa about + diēs day] | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
circadian
coined 1959 from L. circa "about" + diem, acc. sing. of dies "day" (see diurnal). The original use is in circadian rhythm.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
circadian cir·ca·di·an (sər-kā'dē-ən, -kād'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.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Word Dynamo Rating For Circadian
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