spirometer

Definitions

  • WordNet 3.6
    • n spirometer a measuring instrument for measuring the vital capacity of the lungs
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Webster's Revised Unabridged Dictionary
    • n Spirometer 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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Century Dictionary and Cyclopedia
    • n spirometer A contrivance for measuring the extreme differential capacity of the human lungs. The instrument most commonly employed consists of an inverted chamber submerged in a waterbath. The breath is conducted by a flexible pipe and internal tube so as to collect in the chamber, which rises in the water, and is fitted with an in index which marks the cubic inches of air expired after a forced inspiration. In the accompanying cut, a a is a small gas-holder containing an inverted vessel a'; b, index, which shows on the scale c the number of cubic inches expired; d, manometer, which, when a' is held down, shows the pressure which the lungs can exert; e, plug-vent for outlet of expired air; f, cock for outlet of water; g, tube through which the expiration is made.
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Chambers's Twentieth Century Dictionary
    • n Spirometer spī-rom′e-tėr an instrument for measuring the capacity of the lungs, or the quantity of air that one can breathe out after a forced inspiration
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Etymology

Webster's Revised Unabridged Dictionary
L. spirare, to breathe + -meter,
Chambers's Twentieth Century Dictionary
L. spirāre, to breathe, Gr. metron, a measure.

Usage

In literature:

Its spirometers and other kindred agencies leave nothing to be desired.
"The Atlantic Monthly, Vol. 10, No. 58, August, 1862" by Various
It will be found by occasional trials upon the spirometer that the breathing capacity increases with these exercises.
"The Mechanism of the Human Voice" by Emil Behnke
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In news:

Olivia Bernard, 14, holds a spirometer she will use to test people for chronic obstructive pulmonary disease for her Girl Scout Gold Award project.
Medical device maker PMD Healthcare has launched what it calls the first personal spirometer to monitor lung function, the company said.
Stuart Stoloff, left, has a spirometer in his Carson City, Nev.
Stuart Stoloff, left, has a spirometer in his Carson City, Nev. A patient, Jason Taylor, blows into it.
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