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UFO



[ ˌyü-(ˌ)ef-ˈō]



UFO   
noun
[ˌyü-(ˌ)ef-ˈō]
plural UFO's or UFOs\ ˌyü-​(ˌ)ef-​ˈōz , ˈyü-​(ˌ)fōz \

Definition of UFO

: an unidentified flying object
especially : flying saucer



First Known Use of UFO

1953, in the meaning defined above



History and Etymology for UFO

unidentified flying object



Dictionary Entries near UFO

Uele

Ufa

ufer

UFO

ufology

ufra disease

Uganda



More Definitions forUFO

UFO

noun

English Language Learners Definition of UFO

: a flying object in the sky that some people believe could be a spaceship from another planet