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See more synonyms for ventilator on Thesaurus.com
  1. a person or thing that ventilates.
  2. a contrivance or opening for replacing foul or stagnant air with fresh air.
  3. Medicine/Medical. a respirator.
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Origin of ventilator

First recorded in 1735–45; ventilate + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ventilator


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

Word Origin and History for ventilator


1743, agent noun from ventilate. Latin ventilator meant "a winnower."

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Online Etymology Dictionary, © 2010 Douglas Harper