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

Set up your account by providing basic identifying information, like your name, birth date, mailing address, etc. —Tyler Everett, MSNBC Newsweek, 16 Oct. 2025

The changes apply only to teen-specific accounts, which are accounts that teens have created using their truthful birth dates or accounts that Instagram has determined through its own investigation are likely to be those of people under 18 years old. —David Ingram, NBC news, 14 Oct. 2025

With access to face photos, birth dates, addresses, and other information belonging to potentially millions of people, hackers stand to benefit the most from the move to require photo IDs as a condition for using a site. —ArsTechnica, 9 Oct. 2025

In October 2019, the model got a tribute to her entire family: the birth dates of father Ron Teigen Sr., mother Vilailuck Teigen, Legend and kids Luna and Miles in black ink. —Grace Gavilanes, PEOPLE, 8 Oct. 2025

Word History

First Known Use

1831, in the meaning defined above

Rhymes for birth date

• abate
• airfreight
• await
• baseplate
• berate
• birthdate
• birthrate
• bookplate
• borate
• breastplate
• bromate
• casemate