Bible Dictionaries
Spirometer
Webster's Dictionary
(n.) An instrument for measuring the vital capacity of the lungs, or the volume of air which can be expelled from the chest after the deepest possible inspiration. Cf. Pneumatometer.
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Bibliography Information
Webster, Noah. Entry for 'Spirometer'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/s/spirometer.html. 1828.