Medical Dictionary

infradian

adj in·fra·di·an \in-ˈfrā-dē-ən\

Medical Definition of INFRADIAN

:  being, characterized by, or occurring in periods or cycles (as of biological activity) of less than 24 hours <infradian rhythms of growth>—compare circadian, ultradian

Browse

How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears