birthday
noun
birth·day
ˈbərth-ˌdā 
1
a
: the day of a person's birth
b
: a day of origin
2
: an anniversary of a birth
her 21st birthday
Examples of birthday in a Sentence
Her birthday is September 30th.
Today is his 21st birthday.
The company just celebrated its 50th birthday.
Recent Examples on the Web
Fanning even attended her first birthday party.
—
Payton Turkeltaub, Variety, 14 May 2026
That process is underway now at Colonial Williamsburg, the Virginia living history town that is marking its own 100th birthday as America celebrates its 250th birthday.
—Phaedra Trethan, USA Today, 13 May 2026
In honor of the tournament’s 80th anniversary, Kincaid’s Burgers will also celebrate its 80th birthday by serving burgers around the course.
—Ella Gonzales
may 13, Fort Worth Star-Telegram, 13 May 2026
Rapid City and the Black Hills should see a strong year for revenue, with the Sturgis rally and the nation's 250th birthday leading the way, Thomson said.
—CBS News, 13 May 2026
See All Example Sentences for birthday
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Payton Turkeltaub, Variety, 14 May 2026
That process is underway now at Colonial Williamsburg, the Virginia living history town that is marking its own 100th birthday as America celebrates its 250th birthday.
—Phaedra Trethan, USA Today, 13 May 2026
In honor of the tournament’s 80th anniversary, Kincaid’s Burgers will also celebrate its 80th birthday by serving burgers around the course.
—Ella Gonzales
may 13, Fort Worth Star-Telegram, 13 May 2026
Rapid City and the Black Hills should see a strong year for revenue, with the Sturgis rally and the nation's 250th birthday leading the way, Thomson said.
—CBS News, 13 May 2026
See All Example Sentences for birthday
Cite this Entry
“Birthday.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birthday. Accessed 16 May. 2026.
Copy CitationKids Definition
birthday
noun
birth·day
ˈbərth-ˌdā
1
: the day or anniversary of one's birth
2
: the day or anniversary of a beginning
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