What does unidentified flying object mean?

Definitions for unidentified flying object

Here are all the possible meanings and translations of the word unidentified flying object.

Princeton's WordNet

  1. unidentified flying object, UFO, flying saucer(noun)

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


  1. unidentified flying object(Noun)

    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. Abbreviated UFO.

  2. unidentified flying object(Noun)

    An alien spacecraft. More commonly called a UFO.

  3. Origin: The phrase is usually attributed to Edward J. Ruppelt who coined it as a replacement of the terms flying saucer and flying disk.


  1. Unidentified flying object

    An unidentified flying object, or UFO, in its most general definition, is any apparent anomaly in the sky that is not readily identifiable as any known object or phenomenon by visual observation and/or use of associated instrumentation such as radar. These anomalies were referred to popularly as "flying saucers" or "flying discs" during the late 1940s and early 1950s. The term "UFO" was officially created in 1953 by the U.S. Air Force to replace the more popular terms because of the variety of shapes described other than "discs" or "saucers". It was stated that a "UFOB" was "any airborne object which by performance, aerodynamic characteristics, or unusual features, does not conform to any presently known aircraft or missile type, or which cannot be positively identified as a familiar object." As originally defined, the term was restricted to those fraction of cases which remained unidentified after investigation, with USAF interest being for potential national security reasons and/or "technical aspects". The term UFO became more widespread during the 1950s, at first in professional literature, but later in popular use. UFOs garnered considerable interest during the Cold War, an era associated with a heightened concern for national security.


  1. Chaldean Numerology

    The numerical value of unidentified flying object in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of unidentified flying object in Pythagorean Numerology is: 5

Sample Sentences & Example Usage

  1. Gen Nakatani:

    When the Air Self Defense Force detects indications of an unidentified flying object that could violate our country's airspace, it scrambles fighter jets if necessary and makes visual observation, no extraterrestrials.

Images & Illustrations of unidentified flying object

  1. unidentified flying objectunidentified flying objectunidentified flying object

Translations for unidentified flying object

From our Multilingual Translation Dictionary

  • NUO, naməlum uçan obyektAzerbaijani
  • neidentifikovatelný létající předmět, UFOCzech
  • UFO, unidentifiziertes FlugobjektGerman
  • ΑΤΙΑ, άγνωστης ταυτότητας ιπτάμενο αντικείμενοGreek
  • NIFO, ne-identifita flug-objektoEsperanto
  • objeto volador no identificadoSpanish
  • tunnistamaton lentävä esine, UFOFinnish
  • objet volant non-identifié, OVNIFrench
  • FFH, fljúgandi furðuhluturIcelandic
  • oggetto volante non identificato, OVNIItalian
  • 空飛ぶ円盤, UFO, 未確認飛行物体, 宇宙船Japanese
  • UFODutch
  • uidentifisert flygende objektNorwegian
  • objeto voador não-identificadoPortuguese
  • летающая тарелка, НЛО, неопознанный летающий объектRussian
  • Oidentifierat flygande objekt, Oidentifierat flygande föremål, UFOSwedish
  • đĩa bay, tàu bay chưa nhận biếtVietnamese

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