UFO
noun
ˌyü-(ˌ)ef-ˈō 
ˈyü-(ˌ)fō
plural UFO's or UFOs
ˌyü-(ˌ)ef-ˈōz
ˈyü-(ˌ)fōz
: a mysterious flying object in the sky that is sometimes assumed to be a spaceship from another planet : unidentified flying object
"All right." The President sighed. "Is there anybody around this table who thinks UFOs and this signal from Vega have anything to do with each other?"—
Carl Sagan
Carl SaganIn 1966, the first UFO "abduction" was described in journalist John G. Fuller's book The Interrupted Journey.—Keay Davidson
Keay Davidsoncalled also UAP, unidentified aerial phenomenon, unidentified anomalous phenomenon
Examples of UFO in a Sentence
Recent Examples on the Web
Are there any common elements of UFO lore like — abductions, ancient aliens, Area 51, Skinwalker Ranch, etc — that some UFO believers have long believed but that your research has suggested are not true?
—James Hibberd, The Hollywood Reporter, 5 Mar. 2025
From China to Chile, here are 15 UFO hotspots around the world for E.T. seekers who know the truth is out there.
—Passport By Forbeslife, Forbes, 28 Feb. 2025
Sources tell Deadline that Apple Original Films is in talks to land the untitled UFO package that has Joseph Kosinski directing and Jerry Bruckheimer producing.
—Mike Fleming Jr, Deadline, 20 Feb. 2025
In addition, Jason has performed with the rock band UFO, recorded with Paul Rodgers and Joe Bonamassa, toured with Peter Frampton and Heart, among other musical accomplishments.
—Emily Krauser, People.com, 23 Feb. 2025
See All Example Sentences for UFO
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James Hibberd, The Hollywood Reporter, 5 Mar. 2025
From China to Chile, here are 15 UFO hotspots around the world for E.T. seekers who know the truth is out there.
—Passport By Forbeslife, Forbes, 28 Feb. 2025
Sources tell Deadline that Apple Original Films is in talks to land the untitled UFO package that has Joseph Kosinski directing and Jerry Bruckheimer producing.
—Mike Fleming Jr, Deadline, 20 Feb. 2025
In addition, Jason has performed with the rock band UFO, recorded with Paul Rodgers and Joe Bonamassa, toured with Peter Frampton and Heart, among other musical accomplishments.
—Emily Krauser, People.com, 23 Feb. 2025
See All Example Sentences for UFO
Cite this Entry
“UFO.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/UFO. Accessed 14 Mar. 2025.
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