1. relating to a balloon or other aircraft that flies because it weighs less than the air it displaces
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How To Use lighter-than-air In A Sentence

  • (Blimps use lighter-than-air gas, not hot air) 10: 16 PM Elementary!
  • One of helium's better-known, but less commercially important, applications is in lighter-than-air craft, such as dirigibles, and in weather and research balloons.
  • An airship is any lighter-than-air craft, including blimps, dirigibles and zeppelins. - Rare air above the Super Bowl
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