bi·​ol·​o·​gy | \ bī-ˈä-lə-jē \

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

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Other Words from biology

biologist \ bī-​ˈä-​lə-​jist \ noun

Examples of biology in a Sentence

advances in the field of biology the biology of the rain forest the biology of tumor cells
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Recent Examples on the Web

Among ninth-graders at Stuyvesant High School, for example, girls on average earned better grades than boys in each of the 10 science and technology courses analyzed, including biology and physics. Leslie Brody, WSJ, "Entry Exam to City’s Top High Schools Underrates Girls, Study Finds," 8 Jan. 2019 That island is also home to Epstein’s foundation, the Jeffrey Epstein VI Foundation — best known for donating $30 million to Harvard University for the establishment of a mathematical biology and evolutionary dynamics program. Jane Coaston, Vox, "Jeffrey Epstein, the convicted sex offender who is friends with Donald Trump and Bill Clinton, explained," 3 Dec. 2018 This kind of inheritance is still extremely rare and seems potentially linked to mitochondrial disease, but the robust confirmation of it in humans is huge news for biology and medicine. Cathleen O'grady, Ars Technica, "Plot twist: Mitochondrial DNA can come from both parents," 28 Nov. 2018 Students gain lessons about biology and nutrition, and DeWitt Clinton High has incorporated farm work into AP courses. Patrick Sisson, Curbed, "How urban farms in New York schools are raising food to fight inequality," 27 Sep. 2018 Each task resembles research that is current in biology and chemistry. Veronique Greenwood, New York Times, "It’s Time for a Chemistry Lesson. Put on Your Virtual Reality Goggles.," 3 July 2018 And what happens if some wayward youth makes it past the school resource officer with his JanSport stuffed full of biology and history and social studies books? Joseph Gerth, The Courier-Journal, "Backpacks don't kill. People do. So why ban them?," 11 June 2018 In the following years, Laude's approach was replicated in biology and calculus courses, and earlier this decade, Laude was promoted to work with a team at UT-Austin to improve the graduation rate for the entire campus. Jeffrey J. Selingo, ajc, "Why do so many students drop out of college? And what can be done about it?," 9 June 2018 To believe otherwise is to be ignorant of basic biology. WSJ, "Masculine Men Are Honorable, Bullies Aren’t," 25 Jan. 2019

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.

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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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Statistics for biology

Last Updated

15 Feb 2019

Look-up Popularity

Time Traveler for biology

The first known use of biology was in 1799

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More Definitions for biology



English Language Learners Definition of biology

: a science that deals with things that are alive (such as plants and animals)
: the plant and animal life of a particular place
: the processes that occur in a living thing


bi·​ol·​o·​gy | \ bī-ˈä-lə-jē \

Kids Definition of biology

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


bi·​ol·​o·​gy | \ -jē \
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

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More from Merriam-Webster on biology

Rhyming Dictionary: Words that rhyme with biology

Spanish Central: Translation of biology

Nglish: Translation of biology for Spanish Speakers

Britannica English: Translation of biology for Arabic Speakers

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