noun
- an aircraft that stays aloft by using a gas that is lighter than air, such as a balloon or airship
Usage: technical
Examples
- The weather aerostat provided atmospheric data from high altitude.
- Military aerostats are used for surveillance and communication purposes.
- The research team launched an aerostat to study wind patterns.
- Unlike airplanes, an aerostat relies on buoyancy rather than lift from wings.
- The tethered aerostat remained stationary above the observation post.
- Scientists used the aerostat to collect samples from the upper atmosphere.