an airship, balloon, or other aircraft that is lifted and sustained by means of one or more containers filled with a gas lighter than air
Origin of aerostatFrench aérostat: see aero- and -stat
An aircraft, especially a balloon or dirigible, deriving its lift from the buoyancy of surrounding air rather than from aerodynamic motion.
Origin of aerostatFrench aérostat Greek āero- aero- ; see aero- . Greek statos standing ; see stato- .
- aer′o·stat′ic aer′o·stat′i·cal