also: アイアールビーエム
intermediate-range ballistic missile; IRBM
Military term for a ballistic missile with a range between about 3,000 and 5,500 km. The Japanese term 中距離弾道ミサイル is a direct translation.
See also: 中距離弾道ミサイル
IRBM is an abbreviation for intermediate-range ballistic missile.
That country deployed a new type of IRBM.