UFO
noun/ˌjuː ef ˈəʊ/, /ˈjuːfəʊ/
/ˌjuː ef ˈəʊ/, /ˈjuːfəʊ/
(also ufo)
(plural UFOs, ufos)
- a strange object that some people claim to have seen in the sky and believe is a spacecraft from another planet (the abbreviation for ‘unidentified flying object’)
不明飞行物，幽浮（全写为 Unidentified Flying Object） Oxford Collocations DictionaryUFO is used before these nouns:- sighting
Word Origin1950s: acronym from unidentified flying object.