Relating to biologic variations or rhythms occurring in cycles more frequent than every 24 hours.

Compare: circadian, infradian.

Origin: ultra-_ L. Dies, day

Retrieved from "http://www.biology-online.org/bodict/index.php?title=Ultradian&oldid=58519"
First | Previous (Ultracentrifuge) | Next (Ultrafiltration) | Last
Please contribute to this project, if you have more information about this term feel free to edit this page.