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circadian

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.19 sec.
cir·ca·di·an  (sr-kd-n, -kd-, sûrk-dn, -d-)
adj. Biology
Relating to or exhibiting approximately 24-hour periodicity.
[Latin circ, around; see circa + Latin dis, day; see dyeu- in Indo-European roots.]
cir·cadi·an·ly adv.
circadian
Adjective
of biological processes that occur regularly at 24-hour intervals [Latin circa about + dies day]
ThesaurusLegend:  Synonyms Related Words Antonyms
Adj.1.circadian - of or relating to biological processes occurring at 24-hour intervals; "circadian rhythms"
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Gene Block of the University of Virginia in Charlottesville and his colleagues study how the body's natural timekeeping, or circadian rhythm, changes with age.
Jet lag might hasten death in elderly by Science News
Circadian desynchronosis or jet lag occurs when our body's 24-hour internal biological clock is out of balance.
Destination Points: Acupuncture Treatment for Jet Lag by Airguide Online
This hormone, produced by the pineal gland, helps regulate the body's circadian rhythm and immune function, and also suppresses tumor growth.
Decreased melatonin production linked to light exposure by Tillett, Tanya / Environmental Health Perspectives
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