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lighter than air

   Also found in: Wikipedia 0.01 sec.
lighter than air
adj (lighter-than-air when prenominal)
1. (Physics / General Physics) having a lower density than that of air
2. (Engineering / Aeronautics) of or relating to an aircraft, such as a balloon or airship, that depends on buoyancy for support in the air


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So the airship could be made either heavier or lighter than air, and losses of weight through the consumption of fuel, the casting of bombs and so forth, could also be compensated by admitting air to sections of the general gas-bag.
 
 
 
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