unidentified flying object

Etymology
The phrase is usually attributed to US Air Force officer (1923–1960) who coined it as a replacement of the terms  and.

Noun

 * 1) Anything not readily explainable appearing to move through or be suspended in the air, primarily used to refer to objects that seem to be at least of small familiar aircraft size.
 * 2)  An alien spacecraft.
 * 1)  An alien spacecraft.
 * 1)  An alien spacecraft.

Hypernyms

 * flying object

Translations

 * Armenian: չբացահայտված թռչող օբյեկտ
 * Asturian: oxetu esnalador non identificáu
 * Azerbaijani: naməlum uçan obyekt, NUO, uçan naməlum obyekt
 * Basque: objektu hegalari ezezagun
 * Belarusian: неапазна́ны лята́ючы аб'е́кт
 * Bulgarian: неидентифици́ран летя́щ обе́кт
 * Catalan: objecte volador no identificat
 * Chinese:
 * Cantonese: 不明飛行物體
 * Mandarin:, ,
 * Cornish: taklen-neyja anaswonys
 * Czech: neidentifikovatelný létající předmět,
 * Dutch:
 * Esperanto: ne-identifita flug-objekto, NIFO
 * Finnish: tunnistamaton lentävä esine; ,
 * French: objet volant non-identifié,
 * Georgian: ამოუცნობი მფრინავი ობიექტი
 * German: unidentifiziertes Flugobjekt,
 * Greek: άγνωστης ταυτότητας ιπτάμενο αντικείμενο,
 * Hindi: उड़न तश्तरी
 * Hungarian: azonosítatlan repülő tárgy
 * Icelandic:, FFH
 * Italian: oggetto volante non identificato,
 * Japanese: ,
 * Kannada: ಅಪರಿಚಿತ ಹಾರಾಡುವ ವಸ್ತು
 * Kazakh: беймәлім ұшқыш нысан
 * Khmer: វត្ថុហោះហើរមិនស្គាល់អត្តសញ្ញាណ
 * Korean:
 * Macedonian: неидентификуван летечки објект,
 * Mongolian: үл танигдах нисдэг биет, ҮТНБ
 * Norwegian: uidentifisert flygende objekt
 * Polish:
 * Portuguese: objeto voador não-identificado
 * Romanian: obiect zburător neidentificat
 * Russian: ,
 * Sinhalese: හඳුනා නොගත් පියාඹන වස්තූන්
 * Spanish: objeto volador no identificado
 * Swedish: oidentifierat flygande föremål, oidentifierat flygande objekt; ,
 * Tamil: அடையாளம் கண்டுபிடிக்க முடியாத பறக்கும் பொருள்
 * Telugu: గుర్తించబడని ఎగురుతున్న వస్తువు
 * Turkish:
 * Ukrainian: непі́знаний літа́ючий об'є́кт
 * Vietnamese: vật thể bay không xác định, vật thể bay chưa xác định


 * Azerbaijani: naməlum uçan obyekt, NUO
 * Bulgarian: неидентифици́ран летя́щ обе́кт
 * Chinese:
 * Mandarin:
 * Finnish:
 * Greek:
 * Japanese:, , 空飛ぶ円盤
 * Russian: ,
 * Turkish: ,