What does "Steno-" in medical terminology mean?

The prefix "steno-" in medical terminology refers to something that is narrow or constricted. This prefix is derived from the Greek word "stenos," which means narrow. In a medical context, it is often used to describe conditions where a passageway or opening is smaller than normal, such as in the case of "stenosis," which denotes the narrowing of blood vessels or other tubular structures in the body. This is crucial in diagnosing and treating various medical conditions, as a narrowed passage can lead to impaired function or other health issues. Understanding the meaning of this prefix allows healthcare professionals to accurately communicate about anatomical changes and health concerns related to constricted areas.