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
However things turn out next month, Bowe’s 38th birthday will coincide with another passage in her life, one dripping with anticipation and, perhaps, a dose of poignancy.
—
Steve Buckley, New York Times, 7 Jan. 2026
The pair welcomed Sophia in June 2015, per a celebratory Facebook post marking her 9th birthday.
—Charna Flam, PEOPLE, 7 Jan. 2026
The trio were indicted in May and accused of falsifying loan applications to get federal pandemic relief funds and money meant for Brown’s nonprofit that was spent on a lavish birthday party and Louis Vuitton items.
—Julia Coin, Charlotte Observer, 7 Jan. 2026
My birthday is a few days after the new year.
—Judith Martin, Sun Sentinel, 6 Jan. 2026
See All Example Sentences for birthday
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Steve Buckley, New York Times, 7 Jan. 2026
The pair welcomed Sophia in June 2015, per a celebratory Facebook post marking her 9th birthday.
—Charna Flam, PEOPLE, 7 Jan. 2026
The trio were indicted in May and accused of falsifying loan applications to get federal pandemic relief funds and money meant for Brown’s nonprofit that was spent on a lavish birthday party and Louis Vuitton items.
—Julia Coin, Charlotte Observer, 7 Jan. 2026
My birthday is a few days after the new year.
—Judith Martin, Sun Sentinel, 6 Jan. 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 7 Jan. 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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