GNU Collaborative International Dictionary of English

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Found one definition

1.       
   aeration, Aëration (), n. [Cf. F. aération.]
   1. Exposure to the free action of the air; airing; as, “aëration of soil, of spawn, etc.”
   
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   2. (Physiol.) A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.
   
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   3. The act or preparation of charging a liquid with carbon dioxide gas to make it effervescent.
   
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   4. the act of charging a liquid with air or oxygen for the purpose of purification.
   
   [WordNet 1.5 +PJC]