biological
adjective
bi·o·log·i·cal
ˌbī-ə-ˈlä-ji-kəl 
variants
or less commonly biologic
1
: of or relating to biology or to life and living processes
2
: used in or produced by applied biology
3
: connected by direct genetic relationship rather than by adoption or marriage
her biological father
Examples of biological in a Sentence
the rights of the biological father in this case
Recent Examples on the Web
But a trip back home to see his biological mother changed the trajectory of his life.
—
Holly Yan, CNN Money, 29 Nov. 2025
An extensive menu of obesity drugs that work via distinct biological mechanisms means that patients will have more options to try.
—Sarah Zhang, The Atlantic, 28 Nov. 2025
Russo-Young revisits her family’s unique—and headline-making—history in this engrossing docuseries about her biological father, a gay sperm donor, suing for paternity rights, and the lawsuit that threatened her already vulnerable family.
—Dan Stahl, New Yorker, 28 Nov. 2025
Ireland Baldwin recently spoke out about cutting toxic members of her family out of her life, and actress Kate Hudson has always been vocal about her complicated relationship with her biological father.
—Lori A Bashian, FOXNews.com, 28 Nov. 2025
See All Example Sentences for biological
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Holly Yan, CNN Money, 29 Nov. 2025
An extensive menu of obesity drugs that work via distinct biological mechanisms means that patients will have more options to try.
—Sarah Zhang, The Atlantic, 28 Nov. 2025
Russo-Young revisits her family’s unique—and headline-making—history in this engrossing docuseries about her biological father, a gay sperm donor, suing for paternity rights, and the lawsuit that threatened her already vulnerable family.
—Dan Stahl, New Yorker, 28 Nov. 2025
Ireland Baldwin recently spoke out about cutting toxic members of her family out of her life, and actress Kate Hudson has always been vocal about her complicated relationship with her biological father.
—Lori A Bashian, FOXNews.com, 28 Nov. 2025
See All Example Sentences for biological
Cite this Entry
“Biological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biological. Accessed 1 Dec. 2025.
Copy CitationMedical Definition
biological
adjective
variants
also biologic
1
: of or relating to biology or to life and living processes
2
: used in or produced by applied biology
3
: related by direct genetic relationship rather than by adoption or marriage
an adoptee who searched for years for her biological parents
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