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
Whether measured in testosterone levels, bone density, lung capacity, or muscle mass, biological males carry inherent physical advantages over women.
—
Lisa Frizell, Denver Post, 6 Apr. 2026
Over the past century, human ingenuity and technological progress have created numerous ways for humanity to destroy itself, including through nuclear war, climate change, biological threats and, most recently, artificial intelligence.
—Daniel Holz, Chicago Tribune, 5 Apr. 2026
The International Olympic Committee announces a new policy for women's sports, mandating gene screening to ensure only biological females compete, citing fairness and safety.
—Ryan Gaydos, FOXNews.com, 5 Apr. 2026
In 2022, Belsky was involved in developing a clock called DunedinPACE, which measures the rate of biological aging.
—Lindsey Leake, NBC news, 5 Apr. 2026
See All Example Sentences for biological
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Lisa Frizell, Denver Post, 6 Apr. 2026
Over the past century, human ingenuity and technological progress have created numerous ways for humanity to destroy itself, including through nuclear war, climate change, biological threats and, most recently, artificial intelligence.
—Daniel Holz, Chicago Tribune, 5 Apr. 2026
The International Olympic Committee announces a new policy for women's sports, mandating gene screening to ensure only biological females compete, citing fairness and safety.
—Ryan Gaydos, FOXNews.com, 5 Apr. 2026
In 2022, Belsky was involved in developing a clock called DunedinPACE, which measures the rate of biological aging.
—Lindsey Leake, NBC news, 5 Apr. 2026
See All Example Sentences for biological
Cite this Entry
“Biological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biological. Accessed 8 Apr. 2026.
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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