birth date
noun
variants
or less commonly birthdate
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
Cite this Entry
“Birth date.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birth%20date. Accessed 22 Aug. 2026.
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