Spī-rōm'e-ter, n.
n. [Lat. spirare, to breathe, and Gr. μέτρον, measure.] An instrument for measuring the vital capacity of the lungs, or the quantity of air that an individual can expire after a forced inspiration.
n. [Lat. spirare, to breathe, and Gr. μέτρον, measure.] An instrument for measuring the vital capacity of the lungs, or the quantity of air that an individual can expire after a forced inspiration.