aerate

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To supply with air or expose to the circulation of air.
• transitive verb To expose to oxygen, as in the oxygenation of the blood by respiration.
• transitive verb To supply or charge (liquid) with a gas, especially to charge with carbon dioxide.

from The Century Dictionary.

• To expose to the free action of the air.
• To cause to mix with carbonic-acid or other gas.
• In physiology, to change the circulating fluids of, as animals, by the agency of the air; arterialize.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To combine or charge with gas; usually with carbonic acid gas, formerly called fixed air.
• transitive verb To supply or impregnate with common air
• transitive verb (Physiol.) To expose to the chemical action of air; to oxygenate (the blood) by respiration; to arterialize.
• transitive verb cause a change by passing air through (of sewage)
• transitive verb bread raised by charging dough with carbonic acid gas, instead of generating the gas in the dough by fermentation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To supply oxygen or air.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb impregnate, combine, or supply with oxygen
• verb expose to fresh air
• verb aerate (sewage) so as to favor the growth of organisms that decompose organic matter