spirometer
/spaɪˈrɑmɪtər/
noun
- A medical instrument used to measure the volume of air a person can inhale and exhale, used to test lung function.
- The doctor asked her to breathe into a spirometer to check her lung capacity.
- The nurse cleaned the spirometer before the next patient used it.
- After the surgery, he used a spirometer every hour to help his lungs recover.