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A spirometer
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From Latin spirare (to breathe) +‎ -meter.


spirometer (plural spirometers)

  1. (medicine) A device used to measure the volume of air inspired and expired by the lungs.
    • 2000, Michael Roberts, Michael Jonathan Reiss, Grace Monger, Advanced Biology, Nelson, page 170,
      In humans, a spirometer can be used to record and measure lung volumes and oxygen consumption (illustration 1).
    • 2002, H. Nancy Holmes (editorial director), Illustrated Manual of Nursing Practice, Wolters Kluwer Health (Lippincott Williams & Wilkins), 3rd Edition, page 154,
      While all spirometers encourage slow, sustained maximal inspiration, they can be divided into two types: flow incentive and volume incentive.
    • 2005, E. Eber, M. S. Zach, Spirometry: Volume-Time and Flow-Volume Curves, Jürg Hammer, Ernst Eber (editors), Paediatric Pulmonary Function Testing, Karger Publishers, page 95,
      Wet-type spirometers (such as the classical bell spirometer with a water seal) are simple and accurate but are no longer in use as they have a hygiene problem; they are distinguished from dry-type spirometers (e.g., bellows or piston spirometer).

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