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

To commemorate Jude’s birth, Rice got a tattoo dedicated to him, which features Jude’s name, birth date and zodiac sign. — Kelly Allen, PEOPLE, 16 July 2026

Most Social Security recipients receive benefits on Wednesdays, with payment dates determined by their birth date. — Alex Perry, USA Today, 16 July 2026

Regular Social Security benefits are paid on specific Wednesdays based on the recipient's birth date. — Jordan Green, Memphis Commercial Appeal, 29 June 2026

Back in 2018, a 69-year-old Dutch man infamously attempted to legally change his birth date to match his apparent biological age of 49, with the aim of improving his chances on dating apps. — Juergen Eckhardt, Forbes.com, 23 June 2026

Word History

First Known Use

1831, in the meaning defined above

Rhymes for birth date

• abate
• airfreight
• await
• baseplate
• berate
• birthdate
• birthrate
• bookplate
• borate
• breastplate
• bromate
• casemate