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What does UFO stand for?

UFO stands for Unidentified Flying Object

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Military and Government
  • Science, medicine, engineering, etc.

See other definitions of UFO

Other Resources:
We have 133 other meanings of UFO in our Acronym Attic

Samples in periodicals archive:

1882: The Royal Astronomer witnessed an unidentified flying object from the Greenwich Royal Observatory.
1882: The Royal Astronomer witnessed an Unidentified Flying Object from the Greenwich Royal Observatory.
Report of an unidentified flying object flying in the sky over a windmill.
SHOCKING IMAGES RELEASED WHILE RYANAIR REFUSES TO COMMENT ON 'TEST FLIGHT' SPECULATION Ryanair, Europe's airline, yesterday 22nd Dec confirmed that the Captain of flight FR1397 from Olso Rygge to London Gatwick reported an Unidentified Flying Object to Aviation Authorities after passengers released shocking images taken onboard the aircraft some 200km south of Oslo.
1882: The Royal Astronomer witnessed an unidentified flying object from Greenwich Royal Observatory.