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ventilator

American  
[ven-tl-ey-ter] / ˈvɛn tlˌeɪ tər /

noun

  1. a person or thing that ventilates.

  2. a contrivance or opening for replacing foul or stagnant air with fresh air.

  3. 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.


ventilator British  
/ ˈvɛntɪˌleɪtə /

noun

  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

"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

Etymology

Origin of ventilator

First recorded in 1735–45; ventilat(e) + -or 2

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Explanation

A ventilator is a machine that brings in good air that's safe to breathe and keeps bad air out. A kitchen ventilator uses fans and filters to direct greasy stove exhaust outside. There are architectural ventilators, for keeping the air inside buildings clean, and also medical ventilators, which work to keep breathable air moving in and out of a patient's lungs. This kind of ventilator is only used when someone is unable to breathe effectively on their own. In both cases, ventilators are all about air. The word comes from the Latin root ventulus, "a breeze."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In the end the government said the Ventilator Challenge helped scale up the production of three existing models, and approved one new design by the medical devices firm Penlon.

From BBC • Mar. 11, 2025

Ventilator coverage problems started picking up after technology improvements made the devices easier to use, according to Dr. Lisa Wolfe, a professor at Northwestern’s Feinberg School of Medicine.

From Seattle Times • Mar. 9, 2024

Ventilator usage has average 391 per day in November, 81% higher than the 216 daily in the two weeks prior.

From Washington Times • Nov. 16, 2020

“The Ventilator Challenge has been a great success,” Cabinet Office Minister Michael Gove said.

From Reuters • Jul. 5, 2020

I know of none which are superior to the common Emerson Ventilator, on which there is now no patent.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various

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