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
Lucius Lamar, the U.S. senator from Mississippi, was only nine years old when his namesake father, a prominent Georgia judge, took his own life, just days before his 37th birthday in 1834.
—
TIME, 30 Apr. 2024
In addition to the free dozen, members can expect a birthday treat, double points to celebrate their anniversary month, and exclusive freebies in the Krispy Kreme app or online.
—Abigail Wilt, Southern Living, 30 Apr. 2024
See all Example Sentences for birthday 
TIME, 30 Apr. 2024
In addition to the free dozen, members can expect a birthday treat, double points to celebrate their anniversary month, and exclusive freebies in the Krispy Kreme app or online.
—Abigail Wilt, Southern Living, 30 Apr. 2024
See all Example Sentences for birthday
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'birthday.' 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 birthday
Cite this Entry
“Birthday.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birthday. Accessed 3 May. 2024.
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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