infradian

a. [生]超昼夜的

释义与例句

adj.
  1. 1.

    Cyclical with a periodicity significantly longer than 24 hours, that is, less frequent than circadian.

词源

Uncertain. Possibly from the Latin infra (“below”) and diēs (“a day”) with the English suffix -an. Compare circadian, ultradian, and infra etc.

来源：wiktionary