What does the prefix "epi-" mean?

The prefix "epi-" is derived from Greek and means "above" or "upon." It is commonly used in various medical terms to indicate a location that is situated on top of or in contact with something else. For instance, in the term "epidermis," which refers to the outermost layer of skin, the prefix "epi-" suggests that it lies upon the underlying layers.

Utilizing this prefix in medical terminology helps to convey precise meanings related to anatomy and location, thereby enhancing clear communication among healthcare professionals. Understanding such prefixes is essential for comprehending a wide range of medical terms, and "epi-" clearly indicates a position that is elevated or situated on the surface of a structure or organ.