防ぼう空くう識しき別べつ圏けん

ぼ

う

く

う

し

き

べ

つ

け

ん

Meanings

air defense identification zone; ADIZ

Military term for a designated airspace where aircraft must identify themselves. Often used in news about territorial airspace and defense.

くう

識しき

別べつ

圏けん

を

設せっ

定てい

し

た

。

China established an air defense identification zone in the East China Sea.

防ぼう空くう識しき別べつ圏けんに進しん入にゅうした航こう空くう機きは、速すみやかに識しき別べつ信しん号ごうを送おくらなければならない。

Aircraft entering the ADIZ must promptly transmit identification signals.

防ぼう空くう
防空 is the general term for air defense, while 防空識別圏 specifically refers to the identification zone.
識しき別べつ圏けん
識別圏 means identification zone; 防空識別圏 is the air defense variant.

Compound of 防空 (air defense), 識別 (identification), and 圏 (zone, sphere). A calque of the English 'air defense identification zone'.

圏けん