- nyctohemeral rhythm
- a day and night rhythm.
Medical dictionary. 2011.
nyctohemeral rhythm
Look at other dictionaries:
Circadian — Refers to events occurring within a 24 hour period, in the span of a full (24 hour) day, as in a circadian rhythm. The word “circadian” is a 20th century invention. It was coined in 1959 from the Latin “circa” (around) + “diem” (a day). However,… … Medical dictionary
ultradian — Relating to biologic variations or rhythms occurring in cycles more frequent than every 24 hours. Cf.:circadian, infradian. [ultra + L. dies, day] * * * ul·tra·di·an əl trād ē ən adj being, characterized by, or occurring in periods or cycles (as… … Medical dictionary
circadian — adj. denoting a biological rhythm or cycle of approximately 24 hours. Compare: nyctohemeral, ultradian … The new mediacal dictionary
ultradian — adj. denoting a biological rhythm or cycle that occurs more frequently than once in 24 hours. Compare: circadian, nyctohemeral … The new mediacal dictionary
