What is the meaning of the prefix "peri-"?

The prefix "peri-" originates from the Greek word that means "around" or "surrounding." In medical terminology, this prefix is commonly used to describe structures or conditions that are located around a specific organ or part of the body. For example, the term "pericardium" refers to the membrane that surrounds the heart. This context illustrates how "peri-" conveys the idea of encircling or enclosing an area.

In contrast, the other prefixes do not match this meaning. The prefix that means "before" is associated with terms indicating time relative to an event or condition. "Many" is a term often used to indicate quantity and does not relate to the positional aspect signified by "peri-." Lastly, the prefix that means "not" indicates negation and also does not reflect the surrounding nature implied by "peri-." Thus, "around" is the correct interpretation of the prefix "peri-."