Placental expulsion refers to the process of delivering the placenta after childbirth. There are several synonyms that can be used to describe this process. These include afterbirth, birth membrane, birth products, and placental delivery. Other less common synonyms include the expulsion of the placenta, the extrusion of the placenta, and even the after-gift. Regardless of the terminology used, placental expulsion is an important stage of the birth process that ensures the health and safety of both mother and baby. It typically occurs within 30 minutes after delivery and may be aided by medical professionals if necessary.