1) Balloon 2) Balloon or blimp 3) Balloon or dirigible 4) Weather balloon
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https://www.crosswordclues.com/clue/aerostat
An aerostat (From Greek ἀήρ aer (air) + στατός statos (standing) through French) is a lighter than air craft that gains its lift through the use of a buoyant gas. Aerostats include unpowered balloons and powered airships. A balloon may be free-flying or tethered. An aerostat`s main component is one or more gasbags, a lightweight skin co....
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http://en.wikipedia.org/wiki/Aerostat
any lighter-than air craft; balloon
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http://phrontistery.info/a.html
• (n.) A balloon. • (n.) A balloonist; an aeronaut. • (n.) A passive balloon; a balloon without motive power.
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http://thinkexist.com/dictionary/meaning/aerostat/
A'ër·o·stat noun [ French
aérostat , from Greek ... air + ... placed. See
Statics .]
1. A balloon.
2. A balloonist; an aëronaut.
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http://www.encyclo.co.uk/webster/A/37
aerostat [aero (nautical) + sat (ellite)] 1. A dirigible, balloon, or other aircraft that is lifted and sustained by virtue of one or more containers filled with a gas lighter than air. 2. Any of a proposed system of satellites for use in air traffic control and maritime navigation. 3. In biology, an air sac in an insect body or in the bones of ....
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http://www.wordinfo.info/words/index/info/view_unit/2026/
A lighter-than-air craft, such as a balloon or airship. Its lift is caused by buoyancy relative to the surrounding air.
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https://en.wiktionary.org/wiki/Appendix:Glossary_of_aviation,_aerospace,_an
Denotes a lighter than air craft.
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https://www.encyclo.co.uk/local/20687
A generic terms for aircraft which derive their lift chiefly from buoyancy in the air: lighter than air craft, balloons or airships.
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https://www.encyclo.co.uk/local/20784
any lighter-than-air aircraft, as a balloon or dirigible.
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https://www.infoplease.com/dictionary/aerostat
No exact match found.
