[ ven-tl-ey-ter ]
/ ˈvɛn tlˌeɪ tər /
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a person or thing that ventilates.
a contrivance or opening for replacing foul or stagnant air with fresh air.
Medicine/Medical. an apparatus to produce artificial respiration, moving air into and out of a patient’s lungs: The patient presented with signs of respiratory failure and was placed immediately on a ventilator.



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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of ventilator

First recorded in 1735–45; ventilat(e) + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for ventilator

British Dictionary definitions for ventilator

/ (ˈvɛntɪˌleɪtə) /


an opening or device, such as a fan, used to ventilate a room, building, etc
med a machine that maintains a flow of air into and out of the lungs of a patient who is unable to breathe normally
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

Medical definitions for ventilator

[ vĕntl-ā′tər ]


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.