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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
Historical Examples
  • Note: I would advise a spirometer for measuring the capacity of the lungs.

  • The spirometer, a useful but rather expensive little instrument, measures accurately lung capacity.

    The Boy's Voice J. Spencer Curwen
  • Secure a spirometer and increase the lung capacity until it registers about two hundred and fifty cubic inches.

  • Hence, the spirometer directly measures the respiratory capacity, and only indirectly the pulmonary capacity.

    Pedagogical Anthropology Maria Montessori
  • The spirometer only registered 200 cubic inches instead of 260, which, according to Hutchinson's table, was his mean.

  • It will be found by occasional trials upon the spirometer that the breathing capacity increases with these exercises.

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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