[air-eyt, ey-uh-reyt]
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.

1785–95; < Latin āer- aer- + -ate1

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. 2014.
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World English Dictionary
aerate (ˈɛəreɪt)
1.  to charge (a liquid) with a gas, esp carbon dioxide, as in the manufacture of effervescent drink
2.  to expose to the action or circulation of the air, so as to purify

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1794, from L. ær (gen. æris) "air," from Gk. aer (see air (1)) + verbal suffix -ate (2).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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American Heritage
Science Dictionary
aerate   (âr'āt)  Pronunciation Key 
  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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Example sentences
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.
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