ultradian

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

adjective

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

Nearby words

  1. ultracentrifuge,
  2. ultraclean,
  3. ultraconservative,
  4. ultracrepidarian,
  5. ultracritical,
  6. ultrafast,
  7. ultrafiche,
  8. ultrafilter,
  9. ultrafiltrate,
  10. ultrafiltration

Origin of ultradian

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


Medicine definitions for ultradian

ultradian

[ ŭl-trādē-ən ]

adj.

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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.