ultradian

[ uhl-trey-dee-uh n ]
/ ʌlˈtreɪ di ən /

adjective

of or relating to a biorhythm having a period of less than 24 hours.

Origin of ultradian

1960–65; ultra- + Latin di(ēs) day + -an

Words nearby ultradian

ultracentrifuge, ultraclean, ultraconservative, ultracrepidarian, ultracritical, ultradian, ultrafast, ultrafiche, ultrafilter, ultrafiltrate, ultrafiltration

Medical definitions for ultradian

ultradian
[ ŭl-trā′dē-ən ]

adj.

Relating to or exhibiting periodic physiological activity that occurs more than once every 24 hours.