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[air-eyt, ey-uh-reyt] /ˈɛər eɪt, ˈeɪ əˌreɪt/
verb (used with object), aerated, aerating.
to expose to the action or effect of air or to cause air to circulate through:
to aerate milk in order to remove odors.
to change or treat with air or a gas, especially with carbon dioxide.
Physiology. to expose (a medium or tissue) to air, as in the oxygenation of the blood in respiration.
Origin of aerate
1785-95; < Latin āer- aer- + -ate1
Related forms
aeration, noun
nonaerated, adjective
nonaerating, adjective
subaerate, verb (used with object), subaerated, subaerating.
subaeration, noun
unaerated, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for aeration
  • Running water kept under aeration which has not stagnated is always bacteriologically safe to drink.
  • The machine at the top is the air pump for aeration.
  • Leaves must be broken down or they will pack together, preventing proper aeration and temperature control.
  • In climates with high levels of annual rainfall, take care to provide compost piles with adequate drainage and aeration.
  • Monitoring includes turning the compost pile to maintain aeration and keeping the pile moist enough to function.
  • aeration can speed up the production time of compost tea.
  • The wine was then sluiced into a decanter ever so slowly so that it could undergo maximum aeration en route.
  • Indeed, syllabub is ultimately about the pursuit of the perfect aeration method.
  • aeration and ignition should probably be at fixed distances above the actual broken well head.
  • aeration systems are generally used in shallow water bodies.
British Dictionary definitions for aeration


verb (transitive)
to charge (a liquid) with a gas, esp carbon dioxide, as in the manufacture of effervescent drink
to expose to the action or circulation of the air, so as to purify
Derived Forms
aeration, noun
aerator, 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 aeration

1570s, from French aération, from aérer (v.), from Latin aer (see air (n.1)). In some cases, from aerate.



1794, from Latin aer (genitive aeris; see air (n.1)) + verbal suffix -ate (2). Related: Aerated; aerating.

Online Etymology Dictionary, © 2010 Douglas Harper
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aeration in Medicine

aeration aer·a·tion (âr'ā'shən)

  1. Exposure to air.

  2. Saturation of a fluid with air or a gas.

  3. The exchange of carbon dioxide and oxygen in the lungs.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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aeration in Science
  1. To add a gas, such as carbon dioxide, to a liquid.

  2. To supply with oxygen. Blood is aerated in the alveoli of the lungs.

  3. To supply with air or expose to the circulation of air.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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