Which medical term prefix means 'around'?

The prefix that means 'around' is derived from the term "periphery," which describes something that surrounds or is located around the edge of an area. In medical terminology, “peri-” is frequently used to describe surrounding structures or areas, such as in the terms "pericardium" (the membrane surrounding the heart) and "peritonitis" (inflammation of the peritoneum, which is the membrane lining the abdominal cavity).

This concept is important in the understanding of anatomy and medical conditions, as many medical terms utilize this prefix to specify a location or relationship in relation to bodily structures. Thus, recognizing "peri-" as meaning 'around' provides a foundational understanding of how to interpret various medical terms accurately.