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

Social Security benefits are typically disbursed to nearly 74 million beneficiaries on Wednesdays, but your exact payment date depends on your birth date. — Laura Daniella Sepulveda, AZCentral.com, 28 Aug. 2026

Meta has a policy of not allowing kids under 13 on its platforms, but some skirt the rule by registering with false birth dates. — John Ruwitch, NPR, 26 Aug. 2026

Feaster is the school’s youngest player dating back to when USC started recording player birth dates. — Ryan Kartje, Los Angeles Times, 23 Aug. 2026

The payment is part of the agency's regular monthly distribution schedule, which sends benefits on Wednesdays based on recipients' birth dates. — Fernando Cervantes Jr, USA Today, 17 Aug. 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