unidentified flying object
The English word “unidentified flying object” has 3 meanings listed here.
noun
- Anything not readily explainable appearing to move through or be suspended in the air.
- Such things as seem to be discrete objects and comparable to aircraft.
- An alien spacecraft.
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.
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More English words
- unidentifiably
- unidentified
- unidentified aerial phenomenon
- Unidentified Authorizing Dictionary
- unidentified submarine object
- unidentified submerged object
- unidentifiedness
- unidentifying
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.