WordReference Random House Unabridged Dictionary of American English © 2025
an•es•trus
(an es′trəs),USA pronunciation n. [Zool.]
- Physiology, Zoology(of a female mammal) the interval of sexual inactivity between two periods of heat or rut.
- an-1 + estrus 1925–30
'anestrus' also found in these entries (note: many are not synonyms or translations):