What does 'Sub-' mean in medical terminology?

In medical terminology, the prefix 'Sub-' is used to indicate a position that is under or below something else. This Latin derivation is commonly applied in various medical contexts, such as 'subcutaneous,' which refers to the layer of tissue located beneath the skin. By using the prefix 'Sub-', healthcare professionals can accurately describe anatomical locations and processes that occur beneath a specific structure or area.

Understanding this prefix is essential for interpreting medical terms and forming a solid foundation in anatomy and medical language, thus enhancing effective communication in healthcare settings. This knowledge is particularly relevant when differentiating between similar terms that may indicate different locations or relationships, such as terms that pertain to structures or conditions that are located at or above the anatomical baseline.