Dictionary/領空りょうくうRyoukuu領空 (Ryoukuu) is a Japanese noun meaning “territorial airspace”.Meaningsnounterritorial airspaceKanji in 領空領jurisdiction空emptyRelated words開くto open (e.g. doors)空emptiness空sky開けるto open (a door, etc.)空くto become less crowded了解comprehension空気air空港airport襟collar大統領president (of a country)横領embezzlement空間space