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

Carrie Esopenko, co-director of the TBI and Concussion Center and also part of the research group, says the research is still at the early stages of validating the biological mechanisms. — Mirin Fader, New York Times, 11 Sep. 2026

And humans have successfully controlled other technologies with catastrophic power, such as biological and nuclear weapons, through cooperation. — Los Angeles Times, 11 Sep. 2026

The company said the incidents show how harder-to-detect biological risks can emerge as frontier models become better at scientific research. — Aamir Khollam, Interesting Engineering, 10 Sep. 2026

Before Darwin, much biological observation was done according to a taxonomy created by the Swedish botanist Carl Linnaeus, which organized species according to the hierarchical order in which they had been created by God. — Literary Hub, 10 Sep. 2026