Definition of birthday
1a : the day of a person's birthb : 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 of birthday from the Web
Rob gives Chyna 28 bouquets of flower and 28 love notes for her 28th birthday.
Originally, the new wing was to be completed by 2020 — in time for the Met’s 150th birthday — and be designed by David Chipperfield.
In January 2013, a friend who had observed Samo’s son at a birthday party privately emailed her, urging her to get help for her son.
Aug. 13 was the 90th birthday of Castro, who died three months later.
He’s written first-person essays for the outlet, which held its 90th birthday party at his SoHo hotel in New York.
Havre de Grace will honor its hometown heroes and the United States' 241st birthday this weekend with a slew of Independence Day festivities and some significant changes from prior years' celebrations.
Wilson said that The B-52's are really into celebrating their 40th birthday and have a slew of shows planned over the next two years, including gigs with symphony orchestras in a lot of cities.
On the iPhone’s 10th birthday, former Apple executives Scott Forstall, Tony Fadell and Greg Christie recount the arduous process of turning Steve Jobs’s vision into one of the best-selling products ever made.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'birthday'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of birthday
BIRTHDAY Defined for English Language Learners
Definition of birthday for English Language Learners
: the day when someone was born or the anniversary of that day
: the day when something began
BIRTHDAY Defined for Kids
Definition of birthday for Students
1 : the day or anniversary of someone's birth
2 : a day of beginning Our town just celebrated its 150th birthday.
Seen and Heard
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