Aircraft
Definition 1 of 2
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Varying Sizes
Aircraft can range from small planes to large airliners, depending on their use and capacity. Small private aircraft are often used for individual travel.
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Not Always Powered
Some aircraft, like gliders, don't have engines and rely on wind and thermals to fly. We watched the gliders silently soaring, marveling at these engineless aircraft.
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General Usage
Use 'aircraft' when referring to any kind of air vehicle in general situations, regardless of the type. The airport manages a variety of aircraft daily.