Adak noun2 •(historical) Ellipsis of Naval Air Facility Adak: a former military base in the Aleutian Islands Alaska, United States, formerly the westernmost major military base in the United States. •Synonym of Kuluk Bay; A harbor in Adak, Andreanof Islands, Aleutians West Census, Aleutian Islands, Alaska, United States; the westernmost harbor capable of sustaining aircraft carrier operations in the United States; upon which the military base is situated.
