Definition: Anestrius: A term used in medicine to describe a surgical procedure where blood vessels are closed to reduce bleeding, as in a cut or wound. Definition of Anestrius: 1. In medical terms, anestrius refers to the removal of blood vessels from the body through surgery, typically during procedures such as heart surgery to remove blockages and prevent blood clots. 2. The procedure involves inserting a tube into the affected area called an anastomosis, which allows blood vessels to be closed off so the surgical site does not experience excessive bleeding or infection. 3. This technique is often used for patients who have undergone major surgeries where bleeding from their bodies can cause complications like internal bleeding or organ damage. 4. Anestrius is a procedure that involves removing the blood vessels through surgery, which prevents blood loss and allows for more effective healing. So in essence, anestrius refers to the process of closing off blood vessels during a surgical procedure to prevent further bleeding.