Anoestrum is a term used in veterinary medicine referring to the non-breeding or non-estrus phase in female mammals. While it is a medical term, there are several synonyms used to refer to this phenomenon. Some of these synonyms include Anestrus, Non-breeding season, Dormancy phase, and Sexual inactivity period. These terms are used in different situations and contexts such as farming, research, and animal husbandry. The correct usage of these synonyms is important for effective and accurate communication among animal health professionals. It is also important to note that these synonyms may have different connotations and implications for different animal species.