birth date
noun
the date of a person’s birth, usually expressed as a specific day, month, and year.
birthdate
-
a variation of
birth date.
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.
If teens try to create new accounts with an older birthdate, they will be prompted to either upload an ID or a video selfie for Instagram’s face-based age-prediction tool.
From The Wall Street Journal ● Dec. 6, 2025
To be eligible for the program, the child must be a US citizen "at birth," possess a Social Security number, and have a birthdate after December 31, 2024, and prior to January 1, 2029.
From Salon ● May 22, 2025
University of Pittsburgh researchers have uncovered blood-based markers linked with healthy and rapid aging, allowing them to predict a person's biological age -- how fast a person's cells and organs age regardless of their birthdate.
From Science Daily ● Mar. 8, 2024
Buried in the essentially random digits of pi, you can find your eight-digit birthdate.
From Scientific American ● Sep. 27, 2023
My mother had a superstition, in fact, that children were predisposed to certain dangers on certain days, all depending on their Chinese birthdate.
From "The Joy Luck Club" by Amy Tan
