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.

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

In other circumstances, the stepparent becomes the child’s parent in the absence of a biological parent.

From Slate • Aug. 2, 2024

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

The milk doesn’t have to be from a biological parent: Unlike blood or bone marrow, there are no biological markers in donated breast milk that limit who can receive it.

From Seattle Times • Mar. 30, 2023

Their pregnancy was considered a rarity in India because "no one else has called themselves a biological parent in the transgender community as far as we know", the couple told the BBC earlier this week.

From BBC • Feb. 8, 2023