1. not in estrus; not experiencing the reproductive cycle characteristic of female mammals during which they are receptive to mating
Usage: biology, veterinary medicine

Examples

• The veterinarian confirmed that the mare was anestrous and would not be ready for breeding until spring.
• During the anestrous period, female dogs show no signs of sexual receptivity.
• Many mammals enter an anestrous phase during winter months when food is scarce.
• The researcher studied hormonal changes in anestrous ewes to understand reproductive cycles.
• Anestrous females typically have lower levels of reproductive hormones.