Oxford Dictionary English the Arctic Circle nounnoun BrE BrE//ˌɑːktɪk ˈsɜːkl// ; NAmE NAmE//ˌɑːrktɪk ˈsɜːrkl// [singular] Add to my wordlistjump to other results enlarge image the line of latitude 66° 33′ North compare Antarctic CircleSee the Arctic Circle in the Oxford Advanced American DictionaryCheck pronunciation: the Arctic Circle oxfordlearnersdictionaries.com