What does the prefix "peri-" indicate in a medical term?

The prefix "peri-" in medical terminology is derived from Greek, meaning "around" or "surrounding." This prefix is commonly used to describe structures or conditions that are situated around a particular organ or body part. For example, the term "pericardium" refers to the fibrous sac surrounding the heart, and "periosteum" refers to the connective tissue that surrounds bone.

Understanding medical prefixes like "peri-" is essential for accurately interpreting and coding medical terminology, as it provides insight into the location or relation of tissues and organs in the body.