| ultradian | Relating to biologic variations or rhythms occurring in cycles more frequent than every 24 hours. Compare: circadian, infradian. Origin: ultra-+ L. Dies, day (05 Mar 2000) |
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| ultradian rhythm | See: ultradian. (05 Mar 2000) |
| ultradian |
pertaining to the rhythmic repetition of certain phenomena in living organisms occurring in cycles of greater frequency than circadian, that is, more frequently than once a day. Cf. circadian and infradian.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| ultradian r. |
the regular recurrence in cycles of less than 24 hours from one stated point to another, such as certain biologic activities that occur at such intervals, regardless of conditions of illumination.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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