'diestrum' definitions:

Definition of 'diestrum'

(from WordNet)
noun
(of animals having several estrous cycles in one breeding season) a state or interval of sexual inactivity or quiescence between periods of activity [syn: diestrus, diestrum]

Definition of 'diestrum'

From: GCIDE
  • diestrum \diestrum\ n. same as diestrus.
  • Syn: diestrus. [WordNet 1.5]