BIOLOGICAL Synonyms: 8 Similar and Opposite Words

biological

adjective

ˌbī-ə-ˈlä-ji-kəl

variants also biologic

Definition of biological

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

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Example Sentences

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.

Recent Examples of biological According to the statement, the Army Corps found the program to be out of compliance following a 2025 review, including with initial physical and biological improvements, credit delivery and credit cost. — Maya Wilkins, Chicago Tribune, 1 Aug. 2026 The team also tested whether the upconverted IR light could drive a biological visual system, rather than just a camera. — Jacek Krywko, ArsTechnica, 31 July 2026 The new law narrows the definition of transgender people to recognized sociocultural communities or those meeting specific biological criteria, and grants the state the authority to determine who qualifies. — Aakash Hassan, Christian Science Monitor, 31 July 2026 Herzog said clock changes disrupt circadian rhythms, the body's internal clock that regulates sleep and other biological functions. — Saman Shafiq, USA Today, 31 July 2026 See All Example Sentences for biological

Recent Examples of Synonyms for biological

Adjective

When the latter has a post-birth panic about surrendering her child, Irina simply absconds with it from the private hospital facility in the middle of the night, knowing the destitute young woman is unlikely to pursue any legal or other options.

— Dennis Harvey, Variety, 30 July 2026
The infant and his mother were then transported to a hospital for post-birth medical care, with both expected to make a full recovery.

— Latoya Gayle, PEOPLE, 3 July 2026

Definition of birth

Adjective

The famed highway—which turns 100 this year—passes through bustling cities, natural landmarks, and quirky roadside attractions, so there’s plenty of things to see (and do) along the way.

— Kelsey Mulvey, Vogue, 3 Aug. 2026
Historically, enduring businesses like Wedgwood, P&G, and Ford consistently built success by prioritizing customer value, trust, and market expansion, recognizing profits as a natural outcome.

— Steve Denning, Forbes.com, 2 Aug. 2026

Definition of natural

Adjective

Because these pages appear while users are connecting through a hotel or venue’s legitimate Wi-Fi gateway, the deception is difficult for users to recognize.

— Zak Doffman, Forbes.com, 1 Aug. 2026
The legislation evolved because lawmakers raised legitimate concerns, and those concerns were taken seriously.

— Anthony Scaramucci, Fortune, 1 Aug. 2026

Definition of legitimate

Browse Nearby Words

biography

biological

biopesticide

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“Biological.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/biological. Accessed 7 Aug. 2026.

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Synonyms of biological

adjective

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