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[ven-tl-ey-shuh n] /ˌvɛn tlˈeɪ ʃən/
the act of ventilating.
the state of being ventilated.
facilities or equipment for providing ventilation.
Origin of ventilation
late Middle English
1425-75; late Middle English ventilacioun < Latin ventilātiōn- (stem of ventilātiō), equivalent to ventilāt(us) (see ventilate) + -iōn- -ion
Related forms
[ven-tl-uh-tawr-ee, -tohr-ee] /ˈvɛn tl əˌtɔr i, -ˌtoʊr i/ (Show IPA),
nonventilation, noun
overventilation, noun
reventilation, noun
underventilation, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for ventilation
Contemporary Examples
Historical Examples
  • One of the first considerations in caring for an invalid is the ventilation of the sick room.

  • So nourishment, cleanliness, and ventilation are the main remedies.

    The Uncommercial Traveller Charles Dickens
  • In construction, care has been taken, to secure perfect light and ventilation.

    Solaris Farm Milan C. Edson
  • Three small round holes had been pierced into the styles for ventilation.

    A Son of Hagar Sir Hall Caine
  • The best method of preventing this is thorough cleanliness, light, and ventilation in the granary.

British Dictionary definitions for ventilation


the act or process of ventilating or the state of being ventilated
an installation in a building that provides a supply of fresh air
Derived Forms
ventilative, adjective
ventilatory, adjective
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 ventilation

mid-15c., from Latin ventilationem (nominative ventilatio) "an exposing to the air," noun of action from past participle stem of ventilare (see ventilate).

Online Etymology Dictionary, © 2010 Douglas Harper
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ventilation in Medicine

ventilation ven·ti·la·tion (věn'tl-ā'shən)

  1. The replacement of fresh air or gas for stale or noxious air or gas in a space.

  2. See respiration.

  3. Aeration or oxygenation, as of blood.

  4. The verbal expression of feelings or emotions in psychotherapy.

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