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Definition of "unidentified flying object" []

  • A flying or apparently flying object of an unknown nature, especially one suspected to have been sent by extraterrestrial beings. (noun)
  • A flying saucer. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "unidentified flying object" in a sentence
  • "He wrote, The Air Force has no information on photographs of an unidentified flying object taken by Mr. and Mrs. Trent of McMinnville, Oregon."