noun (used with a singular verb)
- the science or art of flight.
- (functioning as singular) the study or practice of all aspects of flight through the air
1824, from aeronautic (1784), from French aéronautique, from aéro- (see aero-) + nautique “of ships,” from Latin nauticus, from Greek nautikos (see nautical). Originally of balloons. Also see -ics. Aeronaut “balloonist” is from 1784.
- The design, construction and operation of aircraft.
- The scientific study of flight through the atmosphere.