What is the meaning of the suffix "metry"?

The suffix "metry" signifies the act or process of measurement. It is derived from the Greek word "metron," which means measure. In medical terms, when this suffix is attached to a root word, it indicates that some form of measurement is being conducted, often related to dimensions, distances, or quantities in a clinical or diagnostic context. For example, in terms like "pulmonary function test," the "metry" part emphasizes that measurements related to lung functions are being assessed. This is why the choice indicating measurement aligns accurately with the definition of the suffix "metry."

The other options discuss different concepts: "process of recording" relates to the more general practice of documenting, while "excision" and "incision" pertain to surgical procedures that involve cutting. These meanings do not connect to measurement, making the correct interpretation of the suffix the one related to physical measurement.