one day
idiom
1
: at some time in the future
One day, it'll happen. You'll see.
People may one day be able to take vacations to the moon.
2
: on a day in the past
I went to her house one day and had lunch with her.
One day, we had a terrible argument.
Examples of one day in a Sentence
Recent Examples on the Web
The Olympics would pause for one day before resuming.
—
Jack Birle, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 21 July 2024
The governor’s office requested that state investigators conduct a background check on Tony on Jan. 10, 2019, one day before Tony was appointed to the post.
—Sun Sentinel Editorial Board, Sun Sentinel, 20 July 2024
Gaskin dreamed of one day owning her own salon, and possibly her own franchise.
—Caroline Zimmerman, Kansas City Star, 19 July 2024
Van Leeuwen Van Leeuwen, available in supermarkets nationwide and in its 29 scoop shops across the city, is celebrating the 50th Anniversary of Hello Kitty with a new flavor that will be available for one day only on National Ice Cream Day.
—Karu F. Daniels, New York Daily News, 19 July 2024
See all Example Sentences for one day 
Jack Birle, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 21 July 2024
The governor’s office requested that state investigators conduct a background check on Tony on Jan. 10, 2019, one day before Tony was appointed to the post.
—Sun Sentinel Editorial Board, Sun Sentinel, 20 July 2024
Gaskin dreamed of one day owning her own salon, and possibly her own franchise.
—Caroline Zimmerman, Kansas City Star, 19 July 2024
Van Leeuwen Van Leeuwen, available in supermarkets nationwide and in its 29 scoop shops across the city, is celebrating the 50th Anniversary of Hello Kitty with a new flavor that will be available for one day only on National Ice Cream Day.
—Karu F. Daniels, New York Daily News, 19 July 2024
See all Example Sentences for one day
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'one day.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near one day
Cite this Entry
“One day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%20day. Accessed 27 Jul. 2024.
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