adjective
[ usually before noun ] moving or passing from a flying aircraft to the surface of the sea or land :
air-to-surface missiles
adjective
[ usually before noun ] moving or passing from a flying aircraft to the surface of the sea or land :
air-to-surface missiles
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005