, ˈyü-(ˌ)fō \ , ˈyü-(ˌ)fōz \Definition of UFO
Keep scrolling for more
Learn More about UFO
From the Editors at Merriam-Webster
The Words of the Week - 5/1/20
The Words of the Week - 5/1/20
Some of the words that defined the week ending May 1, 2020
Statistics for UFO
Look-up Popularity
Cite this Entry
“UFO.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/UFO. Accessed 24 Jan. 2021.
Keep scrolling for more
More Definitions for UFO
UFO
nounEnglish Language Learners Definition of UFO
See the full definition for UFO in the English Language Learners Dictionary
Comments on UFO
What made you want to look up UFO? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZ
- Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quiz - Words of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share UFO
Time Traveler for UFO
The first known use of UFO was in 1953
See more words from the same year