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transitive verb, -ated, -ating.
1. to expose to and mix with air.
△Ex. Water in some reservoirs is aerated and purified by spraying it high into the air.
2. to fill with a gas; charge or mix with gas, often under pressure.
△Ex. Soda water is water that has been aerated with carbon dioxide.
3. to expose to chemical action with oxygen.
△Ex. Blood is aerated in the lungs.
4. to expose to air.
noun aeration.
noun aerator.