unidentified flying object

== English == === Etymology === The phrase is usually attributed to US Air Force officer Edward J. Ruppelt (1923–1960) who coined it as a replacement of the terms flying saucer and flying disk. === Noun === unidentified flying object (plural unidentified flying objects) Anything not readily explainable appearing to move through or be suspended in the air. Hypernyms: UAP (broadest sense) < phenomenon Synonyms: UFO, UAP (aerial sense), unidentified aerial phenomenon, unexplained aerial phenomenon Coordinate terms: TLE (“transient luminous event”) (sky); USO (“unidentified submerged object”) (water) (especially and originally) Such things as seem to be discrete objects and comparable to aircraft. Hypernyms: UAP, unidentified aerial phenomenon, unexplained aerial phenomenon (colloquial) An alien spacecraft. Hypernyms: spacecraft < craft, vessel, vehicle Hyponyms: flying saucer, flying disk ==== Translations ==== === Further reading === unidentified flying object on Wikipedia.Wikipedia