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UFO stands for Unidentified Flying Object
It stands for unidentified, UFO is an acronym for Unidentified Flying Object.
Unidentified
Flying
Object
many people think it is unknown flying object, that is right in a way but the most recommended usage answer is UNIDENTIFIED FLYING OBJECT
a unidentified flying object is often something you don't know what you are seeing is called.
"Objeto volador no identificado" is a Spanish equivalent of unidentified flying object."