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UFO   Listen
UFO

noun
1.
An (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins.  Synonyms: flying saucer, unidentified flying object.





WordNet 3.0 © 2010 Princeton University


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"Ufo" Quotes from Famous Books



... In this connection, the later American military slang 'foo fighters' is interesting; at least as far back as the 1950s, radar operators used it for the kind of mysterious or spurious trace that would later be called a UFO (the older term resurfaced in popular American usage in 1995 via the name of one of the ...
— The Jargon File, Version 4.0.0


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