Synonyms of biological

biological

adjective

ˌbī-ə-ˈlä-ji-kəl 

variants also biologic

as in birth

being such by blood and not by adoption or marriage

the rights of the biological father in this case

Synonyms & Similar Words

• birth
• natural
• legitimate
• consanguineous

Antonyms & Near Antonyms

• adopted
• adoptive
• nonbiological
• illegitimate

Example Sentences

Recent Examples of biological

In this Corporate Era, cyborgs (humans with both biological and artificial parts) and synthetics (humanoid robots with artificial intelligence) exist alongside humans. — Rosy Cordero, Deadline, 9 July 2026

According to Henderson, a healthy pond should include both mechanical filtration, which removes debris from the water, and biological filtration, which supports beneficial bacteria that break down fish waste and other organic matter. — Rachel Silva, Martha Stewart, 9 July 2026

Basic and translational research has identified numerous biological mechanisms — genetic susceptibility, appetite-regulation pathways, neuroendocrine processes, metabolic adaptation — that contribute to weight gain and impede its loss. — Max Moser, STAT, 9 July 2026

Such clear data patterns naturally raise questions about biological differences that might affect boys’ reading abilities. — Sarah Scott, Parents, 9 July 2026