Definition of "birthdate" [birthdate]

• The year, month, and day of someone's birth; date of birth (noun)

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• "Often, his birthdate is recorded as March 15, 1767 in South Carolina, but many biographers claim that he was born to his Irish parents on their journey to America."
• "He's birthdate is listed as Jan. 1, 1994 in the 2005, 2006 and 2007 registration lists found by the AP."
• "Extra special added surprise: if your birthdate is not set, the options to show adult content are disabled."