略語大辞典 [MIL] 29 FX fighter-plane X (日本の航空自衛隊の)次期主力戦闘機. 開発機種. fighter-plane X; or fighter-bomber X; next fighter-plane; a future fighter aircraft; (J); [MIL]. 丸善「略語大辞典」JLogosID : 11875517