unidentified flying object

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un·i·den·ti·fied flying object

 (ŭn′ī-dĕn′tə-fīd′)
n.
1. A flying or apparently flying object of an unknown nature, especially one suspected to have been sent by extraterrestrial beings.
2. A flying saucer.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

UFO

(ˈyuˈɛfˈoʊ; sometimes ˈyu foʊ)

n., pl. UFOs, UFO's.
unidentified flying object: any unexplained moving object observed in the sky, esp. one assumed to be of extraterrestrial origin.
[1950–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.unidentified flying object - an (apparently) flying object whose nature is unknownunidentified flying object - an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins
fantasm, phantasm, phantasma, phantom, shadow, apparition - something existing in perception only; "a ghostly apparition at midnight"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
neidentifikovatelný létající předmětnezjištěný létající předmětUFO
Uidentificeret Flyvende Objekt
UFOunbekanntes Flugobjektunidentifiziertes Flugobjekt
ne-identifita flug-objektoNIFO
tunnistamaton lentävä esineUFO
objet volant non-identifiéOVNI
FFHfljúgandi furðuhluturfljúgandi furîuhlutur
UFO宇宙船未確認飛行物体
Oidentifierat flygande föremålOidentifierat flygande objektUFO
đĩa baytàu bay chưa nhận biết

unidentified flying object

noggetto volante non identificato
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

unidentified

(anaiˈdentifaid) adjective
not identified. an unidentified victim.
unidentified flying object (often abbreviated to UFO (juːefˈou) (ˈjuːfou) )
an object from outer space, eg a flying saucer.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.