1. Of or relating to biological processes occurring at 24-hour intervals
   "circadian rhythms"

See also: day

Encyclopedia: Circadian

• orthoclase
• orthodontia
• orthodontic
• orthodontic braces
• orthodontic treatment
• orthodontics
• orthodontist
• orthodonture
• orthodox
• Orthodox Catholic Church
• Orthodox Church
• Orthodox Jew
• Orthodox Judaism
• orthodox sleep
• orthodoxy
• orthoepist
• orthoepy
• orthogenesis
• orthogonal
• orthogonal opposition
• orthogonality
• orthogonally
• orthographic
• orthographical
• orthographically