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

Both his father and mother have tattoos dedicated to their youngest — Messi has Ciro's name and birth date inscribed on his calf, along with his brother's names. — Karli Bendlin, PEOPLE, 24 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

One allegedly provided officers with a false birth date, while the other allegedly refused to allow officers into the residence after the suspects ran inside. — Brittany Miller, FOXNews.com, 23 June 2026

Asteroid 861969 honors his birth date, August 6, 1969. — Chelsea Gohd, Space.com, 20 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