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[lahy-ter-th uh n-air] /ˈlaɪ tər ðənˈɛər/
adjective, Aeronautics
(of an aircraft) weighing less than the air it displaces, hence obtaining lift from aerostatic buoyancy.
of or relating to lighter-than-air craft.
Origin of lighter-than-air
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for lighter-than-air
Historical Examples
  • Air-ships, lighter-than-air craft provided with means of propulsion and steering.

  • This defect was overcome by the use of lighter-than-air gas.

  • The lighter-than-air craft, which belonged first to the army and then to the navy, were a valuable link between the two wings.

    The War in the Air; Vol. 1 Walter Raleigh.
  • His progress had been theirs in the new science of lighter-than-air engineering.

    Zeppelin Harry Vissering
  • In the race for actual accomplishment the balloonists, the advocates of lighter-than-air machines, took the lead at first.

    Aircraft and Submarines Willis J. Abbot.
  • Balloons, the most elementary form of lighter-than-air air-craft, unprovided with any means of propulsion or steering.

  • It now seems to have opened a new era in lighter-than-air navigation.

  • "The Wright brothers invented the lighter-than-air ship early in the twentieth century," he said.

    The Lost Warship Robert Moore Williams
  • Not until the eighteenth century did the experimenters with lighter-than-air devices show any practical results.

    Aircraft and Submarines Willis J. Abbot.
  • So are suction, rusting of metals, thunder and lightning and lighter-than-air flying machines.

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