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

Like other Americans, his birth date changed when the U.S. stopped using the Julian calendar and adopted the Gregorian calendar. —Victoria Moorwood, The Enquirer, 12 June 2024

Have Your Birth Information Ready For the most accurate horoscope readings, astrologers will need your birth date and, ideally, the exact time of your birth. —Playtogga, The Denver Post, 29 May 2024

Sofia shared the name the couple chose for their baby girl and her official birth date. —Sara Vallone, Miami Herald, 24 May 2024

That’s in addition to misspelled names, wrong addresses and incorrect birth dates. —Russ Wiles, The Arizona Republic, 19 May 2024

Word History

First Known Use

1831, in the meaning defined above