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
The real danger is that a bunch of wealthy parents-to-be who are too eager to control their children’s biological future will shell out $5,999 for a product that offers no such control.
—
Arthur Caplan & James Tabery, Scientific American, 28 July 2025
Weingarten points out that the powerful drive to resolve uncertainty as quickly as possible is our brain’s biological impulse to conserve future energy.
—Amy Shoenthal, Forbes.com, 28 July 2025
After giving birth to him, Joshua's biological mother listed Kym as the child's guardian.
—Emy Lacroix, People.com, 25 July 2025
The result includes nuclear DNA from both the biological mother and father, as well as mitochondrial DNA from the separate egg donor.
—Angelica Stabile, FOXNews.com, 25 July 2025
See All Example Sentences for biological
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Arthur Caplan & James Tabery, Scientific American, 28 July 2025
Weingarten points out that the powerful drive to resolve uncertainty as quickly as possible is our brain’s biological impulse to conserve future energy.
—Amy Shoenthal, Forbes.com, 28 July 2025
After giving birth to him, Joshua's biological mother listed Kym as the child's guardian.
—Emy Lacroix, People.com, 25 July 2025
The result includes nuclear DNA from both the biological mother and father, as well as mitochondrial DNA from the separate egg donor.
—Angelica Stabile, FOXNews.com, 25 July 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 5 Aug. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share