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
Confirming independent biological signatures.
—
Big Think, 9 Feb. 2026
Instead of treating touch as a simple raw pressure input, the system uses neuromorphic encoding (modeled from biological nerves) to translate force into rapid electrical spikes.
—New Atlas, 8 Feb. 2026
Despite the prevalence of these diseases, Geisler notes that two patients may share the same diagnosis yet arrive there through entirely different biological and lifestyle pathways, making generalized treatment insufficient.
—Wyles Daniel, USA Today, 7 Feb. 2026
Important biological processes occur during each stage of sleep—from light sleep to deep sleep to the rapid eye movement (REM) dreaming stage.
—Heidi Moawad, Verywell Health, 7 Feb. 2026
See All Example Sentences for biological
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Big Think, 9 Feb. 2026
Instead of treating touch as a simple raw pressure input, the system uses neuromorphic encoding (modeled from biological nerves) to translate force into rapid electrical spikes.
—New Atlas, 8 Feb. 2026
Despite the prevalence of these diseases, Geisler notes that two patients may share the same diagnosis yet arrive there through entirely different biological and lifestyle pathways, making generalized treatment insufficient.
—Wyles Daniel, USA Today, 7 Feb. 2026
Important biological processes occur during each stage of sleep—from light sleep to deep sleep to the rapid eye movement (REM) dreaming stage.
—Heidi Moawad, Verywell Health, 7 Feb. 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 14 Feb. 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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