[yoo-ef-oh or, sometimes, yoo-foh]
- any unexplained moving object observed in the sky, especially one assumed by some observers to be of extraterrestrial origin.
Compare flying saucer.
Origin of UFO
1950–55; u(nidentified) f(lying) o(bject)
Also called unidentified flying object.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ufo
At that point, a sphere lit up, resembling the landing of the UFO in E.T., and the overheard lights descended on the stage.I'm Not Country or Pop. I'm Just Pure Garth Brooks.
September 10, 2014
Long speculated to be a UFO research center, Burlington has been the subject of rampant conspiracies for decades.Britain’s Nuke-Proof Underground City
June 26, 2014
There is a lot of elaborate make-up and costuming, and then a UFO arrives.Punks, UFOs, and Heroin: How ‘Liquid Sky’ Became a Cult Movie
June 2, 2014
I must have done a double-take, like the Navy pilot who sees a UFO outside his cockpit.A History of American Fun
February 9, 2014
Not even Dennis Kucinich, who has spoken of his own UFO encounter before, took the deal.Citizen Hearing on Disclosure, a Faux Hearing About Alien Encounters
May 2, 2013
- unidentified flying object
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for ufo
1953, abbreviation of Unidentified Flying Object, which is attested from 1950.
Online Etymology Dictionary, © 2010 Douglas Harper
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.