noun
anti-aircraft missile
Military term for a missile designed to intercept and destroy aircraft or other aerial targets.
敵機は対空ミサイルで撃墜された。
The enemy plane was shot down by an anti-aircraft missile.
Compound of 対空 (たいくう, 'anti-aircraft') and ミサイル ('missile'). 対空 is itself a Sino-Japanese compound of 対 (たい, 'against') and 空 (くう, 'sky').