anestrus

[ an-es-truhs ]

noun

, Zoology.

1. (in some female mammals) the interval of sexual inactivity between two breeding cycles.

anestrus

/ ænˈiːstrəs /

noun

1. See anoestrus
   a variant spelling (esp US) of anoestrus

Derived Forms

• anˈestrous, adjective

Word History and Origins

Origin of anestrus¹

First recorded in 1925–30; an- ¹ + estrus