biological parent

NOUN

birth mother or father

Synonyms

WEAK

biological father biological mother birth father birth mother birth parent father mother natural parent

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.

One of the oldest laws of parentage is the “marital presumption,” which automatically establishes a birth mother’s husband as the presumptive legal father, even if he is not a biological parent.

From Slate • May 13, 2026

New documents in a lawsuit against Priscilla Presley’s son include claims that Elvis Presley’s granddaughter Riley Keough is the biological parent of John Travolta and the late Kelly Preston’s youngest child, Benjamin.

From Los Angeles Times • Dec. 18, 2025

But despite his current pessimism about the viability of becoming a biological parent, Kari says he "wouldn't write it off".

From BBC • Nov. 2, 2024

His mother had since married a factory worker, James Robertson, whom Robbie Robertson at first believed was his biological parent.

From Seattle Times • Aug. 9, 2023

The Strasbourg-based court found "Italian rules on adoption" can "fully guarantee" the relationship between a child and the partner of their biological parent, Italian Family Minister Eugenia Roccella wrote on Facebook.

From Reuters • Jun. 22, 2023