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circadian
circadian definition - medical
cir·ca·di·an (sər-kāˈdē-ən, -kădˈē-, sûrˌkə-dīˈən, -dēˈ-)
adjective Relating to biological variations or rhythms with a cycle of about 24 hours.
The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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