What does the term "Gastro-" refer to?

The term "Gastro-" is derived from the Greek word "gaster," which means "stomach." In medical terminology, "gastro-" is used as a prefix to describe anything related to the stomach. For instance, terms like "gastroenteritis" refer to inflammation of both the stomach and intestines, while "gastroscopy" refers to the examination of the stomach using a scope.

The other options do not align with the root meaning of "Gastro-." The liver is typically associated with the prefix "hepat-" (as in "hepatitis"), the nose is associated with "rhino-" (as in "rhinitis"), and air would relate to terms such as "pulmo-" or "pneumo." Understanding these prefixes is essential for interpreting medical language accurately.