Flying-saucer meaning

An unidentified flying object of presumed extraterrestrial origin, typically described as a luminous moving disk.
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A UFO, orig. and typically saucer-shaped, that is thought to be an alien spacecraft.
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(informal) An unidentified flying object; UFO; usually with disc-like properties.

Some connect the recent spate of flying saucer sightings with a rumored top-secret military aviation project.

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In fiction, an alien interplanetary vessel with a disc-like shape and generally metallic appearance.
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