One of the mysteries of the English language finally explained.
An airship or hot-air balloon, especially one that is tethered.
- ‘He continues his work in solar and minimal powered aircraft and aerostats.’
- ‘Licenses for the aerostats are granted by the Aviation Authority.’
- ‘Actually, the JLENS blimp is an aerostat, a blimp like vehicle designed to always turn into the wind and stay in the same place.’
- ‘Ground IR and radar sensors are used to cue the aerostat imaging sensor to identify targets.’
- ‘By the way, an aerostat is a tethered balloon - they may be blimp-shaped so they're stable in the wind, though.’
- ‘They might be balloons, airships, planes, or tethered aerostats.’
Late 18th century: from French aérostat, from Greek aēr ‘air’ + statos ‘standing’.
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