A-1
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English[edit]
Adjective[edit]
A-1 (not comparable)
- Alternative spelling of A1
Noun[edit]
A-1 (plural A-1s)
- (US, military, historical) Cox-Klemin A-1 Air Ambulance, never mass produced.
- (US, military) Skyraider single engine general-purpose attack aircraft.
- (US, military) Personnel section of an air force staff.
- (military) Air personnel officer.
- Angstrom.