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.

They verified his birth date in two registries, and filled in the paperwork to register him for a possible record as a joke, she added.

From Barron's • May 15, 2026

For Claude, HealthEx needed my birth date, phone number, face scan and a driver’s license for verification.

From The Wall Street Journal • Apr. 4, 2026

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

I don’t even turn around because I’m stuck staring at her End Day and my birth date.

From "They Both Die at the End" by Adam Silvera

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