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
Republicans are, for the most part, supportive of transgender policies Trump has asked them to tack on as well, one that would restrict surgeries for minors and another preventing biological males from competing in women’s sports.
—
David Sivak, The Washington Examiner, 23 Mar. 2026
The study and device are likely to help researchers understand biological systems, such as circadian rhythms, and nonreciprocal processes, such as how the body breaks down food.
—Ameya Paleja, Interesting Engineering, 23 Mar. 2026
Poor soil management can weaken plant growth, reduce biological activity, and limit the soil’s ability to store carbon over time.
—Dr. Avishesh Neupane, Hartford Courant, 21 Mar. 2026
Transgender golfer Hailey Davidson has sued the LPGA and USGA for its policies that prohibit biological males who underwent male puberty from competing in women's competition.
—Jackson Thompson, FOXNews.com, 21 Mar. 2026
See All Example Sentences for biological
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David Sivak, The Washington Examiner, 23 Mar. 2026
The study and device are likely to help researchers understand biological systems, such as circadian rhythms, and nonreciprocal processes, such as how the body breaks down food.
—Ameya Paleja, Interesting Engineering, 23 Mar. 2026
Poor soil management can weaken plant growth, reduce biological activity, and limit the soil’s ability to store carbon over time.
—Dr. Avishesh Neupane, Hartford Courant, 21 Mar. 2026
Transgender golfer Hailey Davidson has sued the LPGA and USGA for its policies that prohibit biological males who underwent male puberty from competing in women's competition.
—Jackson Thompson, FOXNews.com, 21 Mar. 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 27 Mar. 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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