What is the meaning of the combining form meter in medical terminology?

• A. Measure
• B. Time
• C. Weight
• D. Value

Answer: (A)

The combining form meter means measure. It comes from the Greek metron, which means to measure. When attached to a stem, meter signals a device or instrument that measures a specific property or the act of measuring. In medical terms, you see this in thermometer (measures temperature), spirometer (measures lung function or airflow), and manometer (measures pressure). So the best answer is that meter denotes measurement. The other options—time, weight, or value—don’t fit because they come from different roots and aren’t conveyed by meter.