ultradian
English
Adjective
ultradian (comparative more ultradian, superlative most ultradian)
- Cyclical with a periodicity significantly shorter than 24 hours, that is, more frequent than circadian.
- 1999, Evie Bentley, Awareness: Biorhythms, Sleep and Dreaming, page 15:
- Ultradian rhythms […] operate in cycles of less than 24 hours, that is they happen more than once a day.
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See also
- infradian