What does UFO stand for?

Unidentified Flying Object

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

Military and Government
Science, medicine, engineering, etc.

Other Resources:

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Unavoidable Family Outing (Dave Hackett book) Unbelievably Fun Object (Megatech RC toy) Undefined Fantastic Object (video game) Underwater Flying Object (from the movie 'The Abyss') Unfertilized Oocyte Unfinished Object Unfolding and Partial Order Techniques (workshop) Unidentified Floating Object Unidentified Floral Organs (Arabidopsis thaliana F-box protein) Unidentified Flowing Orifice (House; TV show)		Unidentified FMS Order Unidentified Foreign Object Unidentified Fried Object (cafeteria slang) Unified Film Organization Unified Font Object (XML-based font format) Union Food Outlet United Flying Octogenarians Universal Fibre Optics (consortium) Universal Freight Organisation (Hampshire, England, UK) Universal Friendship Organization (Manipur)

Samples in periodicals archive:

Both the Clinton and Sterling police recorded complaints Saturday night about an unidentified flying object over their towns.

Lights in sky reported as UFOs

Byline: ANI Melbourne, Sept 21 (ANI): Unidentified Flying Objects (UFOs) have returned to the skies of a Northern Territory hotspot, where such sightings have also been reported earlier.

UFOs return to Northern Territory skies

Since then the singer and former member of Take That spent time in California, grew a bushy beard and reportedly pursued an interest in unidentified flying objects.

Robbie Williams charts route back to the top

For example, a while ago while walking round Huddersfield market, an unidentified flying object hit me on the back of the head.

Finding the answers to UFOs ... mostly!

May 5, 1984: The sighting of an unidentified flying object over the community of Chimayo last week has been described as one of the best in many years.

THE PAST 100 YEARS

Seconds later, five more of the unidentified flying objects zoomed over his roof and hovered in his back garden.

Close encounter remains a mystery; PARANORMAL: Six flying objects ...

1556 The first recorded sighting of an unidentified flying object over Basel, Switzerland.

ON THIS DAY

An unidentified flying object was also spotted over Kyrenia in 1998.

Are they here?