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light•er-than-air



Pronunciation: (lī'tur-&thslash;un-âr'), [key]
adj. Aeron.
1. (of an aircraft) weighing less than the air it displaces, hence obtaining lift from aerostatic buoyancy.
2. of or pertaining to lighter-than-air craft.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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