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Adjective: circadian  sur'key-dee-un
  1. Of or relating to biological processes occurring at 24-hour intervals
    "circadian rhythms"

Encyclopedia: Circadian

Nearest

cinquecento
cinquefoil
Cinzano
CIO
cioppino
cipher
Cipro
ciprofloxacin
CIRA
circa
circadian
circadian rhythm
Circaea
Circaea alpina
Circaea lutetiana
Circaetus
Circassian
Circassian walnut
Circe
circinate
Circinus