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birth date

American

[burth-deyt] / ˈbɜrθˌdeɪt /

Or birthdate

noun

the date of a person’s birth, usually expressed as a specific day, month, and year.

Etymology

Origin of birth date

First recorded in 1550–1600

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A parent just needs their child’s original Social Security card and birth date.

From MarketWatch • Mar. 23, 2026

Requirements to obtain a certified license included proof of name and birth date, SSN, address of principal residence and status of citizenship.

From Salon • Feb. 12, 2026

Officially his birth date is registered in 1921, but Yavar says he was born on 15 December 1920.

From BBC • Aug. 15, 2025

Scripture does not record the birth date of Jesus Christ, and so early Christian scholars spent centuries wrangling over when to celebrate this most important apotheosis.

From Salon • Dec. 24, 2024

The Long Count tracks time from a starting point, much as the Christian calendar begins with the purported birth date of Christ.

From "1491" by Charles C. Mann

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023