noun
applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus
• Ant: ↑estrus
• Hypernyms: ↑physical condition, ↑physiological state, ↑physiological condition
* * *
/an es"treuhs/, n. Zool.
(of a female mammal) the interval of sexual inactivity between two periods of heat or rut.
Also, anoestrus.
[1925-30; AN-1 + ESTRUS]
Useful english dictionary. 2012.