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
Young ladies going up against biological men — biological men — there is no excuse for that.
—
Chantz Martin, FOXNews.com, 29 Mar. 2026
The hybrid system outperformed the algorithm running on its own—suggesting that the biological cells were contributing to the learning process.
—Deni Ellis Béchard, Scientific American, 28 Mar. 2026
The Supreme Court heard arguments in a pair of pivotal cases involving LGBT issues at school earlier this year, with the two cases about laws limiting women’s sports to biological women.
—Jack Birle, The Washington Examiner, 28 Mar. 2026
That likely refers to a May 2025 biological opinion by NOAA Fisheries.
—Dan Salas, The Conversation, 28 Mar. 2026
See All Example Sentences for biological
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Chantz Martin, FOXNews.com, 29 Mar. 2026
The hybrid system outperformed the algorithm running on its own—suggesting that the biological cells were contributing to the learning process.
—Deni Ellis Béchard, Scientific American, 28 Mar. 2026
The Supreme Court heard arguments in a pair of pivotal cases involving LGBT issues at school earlier this year, with the two cases about laws limiting women’s sports to biological women.
—Jack Birle, The Washington Examiner, 28 Mar. 2026
That likely refers to a May 2025 biological opinion by NOAA Fisheries.
—Dan Salas, The Conversation, 28 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 31 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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