The process of exposing to air (so as to purify)

• Treatment with carbon dioxide
• Carbon dioxide treatment
• Ventilator's job
• Purpose of a faucet attachment
• Exposure to air
• Lawn improvement process

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1570s, from French aération , from aérer (v.), from Latin aer (see air (n.1)). In some cases, from aerate .

WordNet Word definitions in WordNet
n. the process of exposing to air (so as to purify) the act of charging a liquid with a gas making it effervescent

Wiktionary Word definitions in Wiktionary
alt. The process by which air is circulated through or mixed with a substance such as soil or a liquid. n. The process by which air is circulated through or mixed with a substance such as soil or a liquid.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
aeration \aer*a"tion\, Aeration \A`["e]r*a"tion\, n. [Cf. F. a['e]ration.] Exposure to the free action of the air; airing; as, a["e]ration of soil, of spawn, etc. (Physiol.) A change produced in the blood by exposure to the air in respiration; oxygenation ...