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
Epigenetic aging The researchers tracked the biological age of people in their study by looking for subtle changes in their DNA after different periods of exposure to heat, from a few days of extreme temperatures to several years.
—
Alejandra Borunda, NPR, 17 Mar. 2025
My biggest concern is that an adult, biological male — that hasn’t transitioned — can freely access women’s bathrooms [and] locker rooms, putting their safety and privacy at risk.
—Paulina Dedaj, Fox News, 17 Mar. 2025
From hacking to biological threats, the film reminds audiences that power often lies with those who control the flow of information.
—Mark Davis, Newsweek, 14 Mar. 2025
During the teen years, a biological shift in our circadian rhythm means teens have a hard time falling asleep before 11 p.m., according to Caroline Okorie, MD, a pediatric sleep medicine specialist at Stanford Medicine Children’s Health.
—The Editorial Board, Chicago Tribune, 13 Mar. 2025
See All Example Sentences for biological
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Alejandra Borunda, NPR, 17 Mar. 2025
My biggest concern is that an adult, biological male — that hasn’t transitioned — can freely access women’s bathrooms [and] locker rooms, putting their safety and privacy at risk.
—Paulina Dedaj, Fox News, 17 Mar. 2025
From hacking to biological threats, the film reminds audiences that power often lies with those who control the flow of information.
—Mark Davis, Newsweek, 14 Mar. 2025
During the teen years, a biological shift in our circadian rhythm means teens have a hard time falling asleep before 11 p.m., according to Caroline Okorie, MD, a pediatric sleep medicine specialist at Stanford Medicine Children’s Health.
—The Editorial Board, Chicago Tribune, 13 Mar. 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 27 Mar. 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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