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[spahy-rom-i-ter] /spaɪˈrɒm ɪ tər/
an instrument for determining the capacity of the lungs.
Origin of spirometer
1840-50; spiro-1 + -meter
Related forms
[spahy-ruh-me-trik] /ˌspaɪ rəˈmɛ trɪk/ (Show IPA),
spirometrical, adjective
spirometry, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for spirometer
  • The patient uses an incentive spirometer at regular intervals to improve breathing and loosen sputum.
  • He stands, takes a deep breath and blows into a spirometer.
  • The spirometer's calibration is checked by the technician each day of use.
  • Daily checks for leaks and volume accuracy of the spirometer are needed.
  • An incentive spirometer is often used as part of the breathing exercises.
  • Incentive spirometer is also used to prevent or help treat atelectasis after surgery.
British Dictionary definitions for spirometer


an instrument for measuring the air capacity of the lungs Compare pneumatometer
Derived Forms
spirometric (ˌspaɪrəˈmɛtrɪk) adjective
spirometry, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for spirometer

1846, formed irregularly from Latin spirare "to breathe" (see spirit (n.)) + -meter. Related: Spirometry.

Online Etymology Dictionary, © 2010 Douglas Harper
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spirometer in Medicine

spirometer spi·rom·e·ter (spī-rŏm'ĭ-tər)
An instrument for measuring the volume of air entering and leaving the lungs.

spi'ro·met'ric (-rə-mět'rĭk) adj.
spi·rom'e·try n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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