Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An unidentified flying object.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • initialism unidentified flying object
  • noun An unidentified flying object.
  • noun informal An alien spacecraft.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins

Etymologies

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Examples

  • MC: The name UFO Geek came from my youngest sister.

    Alexandra Holzer: Mike Coletta: A True UFO Geek (VIDEO) Alexandra Holzer 2011

  • MC: The name UFO Geek came from my youngest sister.

    Alexandra Holzer: Mike Coletta: A True UFO Geek (VIDEO) Alexandra Holzer 2011

  • So let me explain: the term UFO is not synonymous with an extraterrestrial or interdimensional spacecraft.

    UFO's aren't Science Fiction 2008

  • Edward U. Condon in “Section I, Recommendations and Conclusions,” wrote, “The history of the past 21 years has repeatedly led Air Force officers to the conclusion that none of the things seen, or thought to have been seen, which pass by the name UFO reports, constituted any hazard or threat to national security.”

    Space Ships of the Visitors Kevin Randle 2000

  • Edward U. Condon in “Section I, Recommendations and Conclusions,” wrote, “The history of the past 21 years has repeatedly led Air Force officers to the conclusion that none of the things seen, or thought to have been seen, which pass by the name UFO reports, constituted any hazard or threat to national security.”

    Space Ships of the Visitors Kevin Randle 2000

  • Edward U. Condon in “Section I, Recommendations and Conclusions,” wrote, “The history of the past 21 years has repeatedly led Air Force officers to the conclusion that none of the things seen, or thought to have been seen, which pass by the name UFO reports, constituted any hazard or threat to national security.”

    Space Ships of the Visitors Kevin Randle 2000

  • Edward U. Condon in “Section I, Recommendations and Conclusions,” wrote, “The history of the past 21 years has repeatedly led Air Force officers to the conclusion that none of the things seen, or thought to have been seen, which pass by the name UFO reports, constituted any hazard or threat to national security.”

    Space Ships of the Visitors Kevin Randle 2000

  • So let me explain: the term UFO is not synonymous with an extraterrestrial or interdimensional spacecraft.

    Archive 2008-06-01 2008

  • We kept seeing the English word UFO popping up on this database as well and people wanted to know does the president know something he wasn't letting on, like this one, does the FBI have an "X" file?

    CNN Transcript Nov 16, 2009 2009

  • • I've been on what I call my UFO Tour, which means, like UFOs, I too have been appearing in small southern towns in front of a handful of hillbillies lately.

    Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph Telegraph Staff 2011

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