What is "spirometry"

Spirometry \Spi*rom"e*try\, n. The act or process of measuring the chest capacity by means of a spirometer.

n. (context medicine English) The measurement of the volume of air that a person can move into and out of the lungs, using a spirometer.

Spirometry (meaning the measuring of breath) is the most common of the pulmonary function tests (PFTs), measuring lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled. Spirometry is an important tool used for generating pneumotachographs, which are helpful in assessing conditions such as asthma, pulmonary fibrosis, cystic fibrosis, and COPD.