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
His wide-ranging, informative and accessible book explores the many reasons — psychosocial as well as biological — behind our favorite social lubricant’s insidious hold.
—
Carly Tagen-Dye, PEOPLE, 11 Jan. 2026
Rather than offering definitive proof of evolution in action, the study highlights how quickly biological traits can track environmental change, and how urban ecosystems may set the stage for evolutionary processes to unfold over longer periods.
—New Atlas, 11 Jan. 2026
In this sense, these nerves behave in a very similar manner to biological pain responses.
—Christopher McFadden, Interesting Engineering, 11 Jan. 2026
All of the signees are Republicans, as almost all Democrat lawmakers across the nation have remained firmly in support of allowing biological males to compete in girls' and women's sports.
—Jackson Thompson, FOXNews.com, 10 Jan. 2026
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.
Carly Tagen-Dye, PEOPLE, 11 Jan. 2026
Rather than offering definitive proof of evolution in action, the study highlights how quickly biological traits can track environmental change, and how urban ecosystems may set the stage for evolutionary processes to unfold over longer periods.
—New Atlas, 11 Jan. 2026
In this sense, these nerves behave in a very similar manner to biological pain responses.
—Christopher McFadden, Interesting Engineering, 11 Jan. 2026
All of the signees are Republicans, as almost all Democrat lawmakers across the nation have remained firmly in support of allowing biological males to compete in girls' and women's sports.
—Jackson Thompson, FOXNews.com, 10 Jan. 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 12 Jan. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share