/ ˈeəreɪt; NAmE ˈer-/ verb [ vn ]
1.
to make it possible for air to become mixed with soil, water, etc. :
Earthworms do the important job of aerating the soil.
2.
to add a gas, especially carbon dioxide , to a liquid under pressure :
aerated water
► aer·ation / eəˈreɪʃn; NAmE eˈreɪ-/ noun [ U ]
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WORD ORIGIN
late 18th cent.: from Latin aer air + -ate , influenced by French aérer .