bi·​ol·​o·​gy | \ bī-ˈä-lə-jē How to pronounce biology (audio) \

Definition of biology

1 : a branch of knowledge that deals with living organisms and vital processes advances in the field of biology a biology textbook
2a : the plant and animal life of a region or environment the biology of the rain forest
b : the life processes especially of an organism or group the biology of cancer cells broadly : ecology

Other Words from biology

biologist \ bī-​ˈä-​lə-​jist How to pronounce biology (audio) \ noun

Examples of biology in a Sentence

advances in the field of biology the biology of the rain forest the biology of tumor cells
Recent Examples on the Web His zeal for the bug was triggered in the winter of his freshman year at Purdue, when he was required to collect an aquatic insect for a biology class. Robert O'harrow Jr., Washington Post, 19 Sep. 2022 Students listened in on class presentations during Linda Burlak’s marine biology class. Globe Staff,, 16 July 2022 Although in clinical medicine and societal discourse, mind and body, sensation and emotion, biology and psychology, are often considered as distinct, human nature begs to differ. Haider Warraich, Scientific American, 8 Sep. 2022 In the meantime, conservation for Jain and Forbes, who are both studying biology, comes in the form of continuing their nighttime expeditions in search of new scorpion species. Jonah Valdez, Los Angeles Times, 4 Sep. 2022 This research is essential to understanding the biology of disease incidence and progression and identifying new drug candidates. David Reese And Kári Stefánsson, STAT, 2 Aug. 2022 Genetic research is essential to unlocking the complex biology — the whys — of autism. Pamela Feliciano, STAT, 22 Aug. 2022 The science and the biology that Shipway specializes in can help inform what should happen to preserve the wreck, and others like it. Brian Amaral,, 11 Aug. 2022 The biology of these formidable flying machines is equally horrifying and fascinating. Adrian Woolfson, WSJ, 31 July 2022 See More

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

First Known Use of biology

1799, in the meaning defined at sense 1

History and Etymology for biology

German Biologie, from bi- + -logie -logy

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Time Traveler for biology

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The first known use of biology was in 1799

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Last Updated

3 Oct 2022

Cite this Entry

“Biology.” Dictionary, Merriam-Webster, Accessed 6 Oct. 2022.

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More Definitions for biology


bi·​ol·​o·​gy | \ bī-ˈä-lə-jē How to pronounce biology (audio) \

Kids Definition of biology

: a science that deals with living things and their relationships, distribution, and behavior


bi·​ol·​o·​gy | \ -jē How to pronounce biology (audio) \
plural biologies

Medical Definition of biology

1 : a branch of science that deals with living organisms and vital processes
2a : the plant and animal life of a region or environment
b : the laws and phenomena relating to an organism or group
3 : a treatise on biology

More from Merriam-Webster on biology

Nglish: Translation of biology for Spanish Speakers

Britannica English: Translation of biology for Arabic Speakers


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