birth date

noun

variants or less commonly birthdate

ˈbərth-ˌdāt 

plural birth dates also birthdates

: the calendar date on which someone or something was born : date of birth

There's even some question about his birth date—one source says 1854, another says 1856.

—Eugene Robinson

Of course, the registered horse has a recorded birth date, but many horses are not so fortunate.

—R. B. Warren

(figurative) Modern British drama does, however, have a precise and undisputed birthdate: May 8, 1956. It is opening night at the fledgling Royal Court …

—Timothy Mason

Examples of birth date in a Sentence

Recent Examples on the Web

The groups argued the motor vehicle records could be 20 years out of date, that naturalized citizens could be removed incorrectly and that citizens with similar names and birth dates of noncitizens could mistakenly lose their registration. —Bart Jansen, USA TODAY, 25 Oct. 2024

Beyond his cappuccino-vibe color scheme, the carbon fiber steering wheel features his initials as well as his birth date. —Marco Della Cava, USA TODAY, 13 Oct. 2024

The union had previously argued for years that publishing actors’ true birth dates could limit their employment prospects, while LGBTQ groups bristled at the database’s practice of publishing birth names of transgender people. —Katie Kilkenny, The Hollywood Reporter, 2 Oct. 2024

According to the Fulton County medical examiner, his birth date was Oct. 4, 1990. —Angel Diaz, Billboard, 5 Sep. 2024

Word History

First Known Use

1831, in the meaning defined above