- Exposure to the free action of the air; airing; as,
aeration of soil, of spawn, etc. - A change produced in the blood by exposure to the air in
respiration; oxygenation of the blood in respiration; arterialization. - The act or preparation of charging with carbonic acid gas
or with oxygen.
Meaning of 'aeration' (Princeton's WordNet)
1 . aeration
[ n]
Meaning (1): - the process of exposing to air (so as to purify)