noun
theater missile defense; TMD
Military term for defending a geographic theater of operations against ballistic and cruise missiles.
戦域ミサイル防衛は、同盟国間の重要な協力分野だ。
Theater missile defense is an important area of cooperation among allied nations.
Compound of 戦域 (theater of war) + ミサイル (missile) + 防衛 (defense), a direct translation of the English term 'theater missile defense'.