Definition, Meaning & Synonyms
anestrus
noun
ˌænˈɛstrəs

Definition
Anestrus is a phase in the reproductive cycle of female mammals when they are not in heat or estrus.

Examples
- The mare was in anestrus and would not accept a stallion’s advances.
- During anestrus, the female dog’s body halts the production of eggs.
- Veterinarians monitor the reproductive cycles to optimize breeding times outside of anestrus.

Meaning
It refers to the time when a female animal is not experiencing the fertile phase of the reproductive cycle, usually characterized by the absence of reproductive hormones signaling readiness for mating.

Synonyms
- non-reproductive phase
- resting phase
- quiescent period