Supinity is a term that refers to the position of lying on one's back with the face upwards. It is often used in the context of medical exams or yoga exercises. However, there are several synonyms that can be used to describe this position, including the supine position, dorsal recumbent position, and back-lying position. These terms are interchangeable and can be used depending on the context. Whether you are a healthcare professional or yoga enthusiast, these synonyms can help you communicate more effectively and accurately, ensuring that everyone understands the position that is being referenced.