Oxford Dictionary English the open air nounnoun BrE BrE//ði ˌəʊpən ˈeə(r)// ; NAmE NAmE//ði ˌoʊpən ˈer// [singular] Add to my wordlistjump to other resultsa place outside rather than in a building He likes to cook in the open air.See the open air in the Oxford Advanced American DictionaryCheck pronunciation: the open air oxfordlearnersdictionaries.com