The branch of biology concerned with biological rhythms. See biological clock, biological rhythm. See also alpha wave, basic rest-activity cycle, beta wave, circadian rhythm, circannual rhythm, delta wave, gamma wave, infradian rhythm, menstrual cycle, sensorimotor rhythm, sleep-wake cycle, suprachiasmatic nucleus, telomere, theta wave, ultradian rhythm, Zeitgeber. [From Greek chronos time + English biology]
Subjects: Psychology — Medicine and Health.