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Adjective: diestrous
Usage: N. Amer (elsewhere: dioestrous)
  1. (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity
    "The diestrous phase is important for reproductive health in many mammals";
    - dioestrous [Brit, Cdn], diestrual [N. Amer], dioestrual [Brit, Cdn]

See also: anestrous

Encyclopedia: Diestrous