English version

UFO in Space topic

From Longman Dictionary of Contemporary EnglishUFOUFO /ˈjuːfəʊ, ˌjuː ef ˈəʊ $ -foʊ, -ˈoʊ/ noun [countable]  TTSTTA (unidentified flying object) a strange object in the sky, that some people believe is a spaceship from another world syn flying saucer
Examples from the Corpus
UFOTeacher, that is a UFO?Coastguards, police and the Lerwick Observatory received 17 independent reports of a UFO.Is this an encounter with a UFO?The genuine effects are reproducible; the quirky - such as UFO sightings - are filed away but rarely prove significant for science.Holloman was the supposed site of a famous UFO encounter, the one that Close Encounters was based on.Jason says UFO is his favourite night of the week.They had chosen to sign up with the UFO subculture.