Definition of aerostat in English:

aerostat

Syllabification: aer·o·stat
Pronunciation: /ˈerəˌstat
 
/

noun

An airship or hot-air balloon, especially one that is tethered.
More example sentences
  • They might be balloons, airships, planes, or tethered aerostats.
  • By the way, an aerostat is a tethered balloon - they may be blimp-shaped so they're stable in the wind, though.
  • He continues his work in solar and minimal powered aircraft and aerostats.

Origin

late 18th century: from French aérostat, from Greek aēr 'air' + statos 'standing'.

Definition of aerostat in:

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