Ett fenomens tendens att återkomma i regelbundna intervaler; i biologiska system kan återkommandet av vissa aktiviteter (hormonella, cellulära, neurala) vara årligt, säsongsbundet, månatligt, dagligt eller mera frekvent (ultradiant).
The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian).
Inga svenska synonymer finns.
Periodicities — Bioperiodicity — Bioperiodicities — Rhythmicity — Rhythmicities — Cyclicity — Cyclicities — Biorhythms — Biorhythm — Biological Rhythms — Biological Rhythm — Rhythm, Biological — Rhythms, Biological