biological

adjective
bi·​o·​log·​i·​cal | \ ˌbī-ə-ˈlä-ji-kəl \
variants: or less commonly biologic \ ˌbī-​ə-​ˈlä-​jik \

Definition of biological

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

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Other Words from biological

biologically \ ˌbī-​ə-​ˈlä-​ji-​k(ə-​)lē \ adverb

Synonyms & Antonyms for biological

Synonyms

birth, consanguineous, natural

Antonyms

adopted, adoptive, nonbiological

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Examples of biological in a Sentence

the rights of the biological father in this case

Recent Examples on the Web

The investigation focused on Michael Martin's two biological children, to whom Heather Martin was their stepmother. Kathleen Joyce, Fox News, "YouTube removes channel operated by couple on probation for child neglect," 19 July 2018 Two weeks of mindfulness training was enough to reduce cortisol levels and blood pressure, two biological signs of stress. Sumathi Reddy, WSJ, "From Meditation to Medication: Headspace Has a Prescription Strategy," 25 June 2018 Government and other scientists are proposing a new way to define Alzheimer’s disease — basing it on biological signs, such as brain changes, rather than memory loss and other symptoms of dementia that are used today. NBC News, "New way of defining Alzheimer's aims to find disease sooner," 10 Apr. 2018 Government and other scientists are proposing a new way to define Alzheimer’s disease — basing it on biological signs, such as brain changes, rather than memory loss and other symptoms of dementia that are used today. Marilynn Marchione, USA TODAY, "New way of defining Alzheimer’s aims to find disease sooner," 10 Apr. 2018 The biological sciences building was, until this week, named after Ayala, its benefactor. Katie Langin, Science | AAAS, "Top stories: cycling and climate change, hidden pharma payments, and cursing surgeons," 6 July 2018 Something similar likely happened with the toad, Emily Taylor, a professor of biological sciences at California Polytechnic State University, tells Live Science. Julissa Treviño, Smithsonian, "Why Doesn’t This Toad Have a Face?," 6 Mar. 2018 No obvious physical or biological constraints preclude the construction of such potent biological weapons. R. Daniel Bressler, Vox, "“Designer bugs”: how the next pandemic might come from a lab," 6 Dec. 2018 More research is necessary to fully delve into possible social and biological factors behind gender differences in narcissism and NPD. Nina Bahadur, SELF, "9 Facts to Know About Narcissistic Personality Disorder Before Calling Someone a Narcissist," 8 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biological.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biological

1818, in the meaning defined at sense 1

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Last Updated

22 Feb 2019

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Time Traveler for biological

The first known use of biological was in 1818

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More Definitions for biological

biological

adjective

English Language Learners Definition of biological

: of or relating to biology or to life and living things
: related through birth

biological

adjective
bi·​o·​log·​i·​cal | \ ˌbī-ə-ˈlä-ji-kəl\

Kids Definition of biological

1 : of or relating to biology or to life and living things biological activity
2 : related by birth

biological

adjective
variants: also biologic

Medical Definition of biological

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

Other Words from biological

biologically \ -​i-​k(ə-​)lē \ adverb

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Comments on biological

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