UFO

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UFO /ˌjuːˌɛfˈoʊ/ noun
plural UFO's or UFOs /ˌjuːˌɛfˈoʊz/
UFO
/ˌjuːˌɛfˈoʊ/
noun
plural UFO's or UFOs /ˌjuːˌɛfˈoʊz/
Learner's definition of UFO
[count]
: a flying object in the sky that some people believe could be a spaceship from another planet
UFO is as an abbreviation of “unidentified flying object.”
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