air cooling1
/ˈɛː ˌkuːlɪŋ/noun
The process of cooling something by means of a current of air.
Origin
Early 20th century; earliest use found in The Westminster Gazette. From air + cooling.
air-cooling2
/ˈɛːˌkuːlɪŋ/adjective
Serving to cool the air, especially in a building.
Origin
Mid 19th century; earliest use found in Horatio Smith (1779–1849), writer and humorist. From air + cooling.