宙ちゅう域いきじ字FuriganaMeanings1nounsector of space; space sectorUsed primarily in science fiction and space-related contexts to refer to a designated area or region of outer space.敵てき艦かん隊たいが我われ々われの宙ちゅう域いきに侵しん入にゅうした。The enemy fleet has entered our sector of space.この宙ちゅう域いきは航こう行こう禁きん止し区く域いきに指し定ていされている。This space sector has been designated a no-fly zone.