from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An instrument for measuring the force or volume of inspiration or expiration in the lungs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device used to measure the force of inspiration or expiration of a person's lungs.
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring the amount of force exerted by the lungs in respiration.
from The Century Dictionary and Cyclopedia
- n. An instrument for measuring the quantity of air inhaled into the lungs at a single inspiration and given out at a single expiration; a pulmometer; a spirometer. Also called pneumometer, pneumonometer.
pneumato- + -meter (Wiktionary)
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