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

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Other Words from biology

biologist \ bī-​ˈä-​lə-​jist How to pronounce biologist (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
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Recent Examples on the Web

That cancer cells migrate back to the original tumor after metastasizing to distant sites is still, 12 years after its discovery, one of the most unexpected and perplexing in cancer biology. Sharon Begley, STAT, "CRISPR makes cancer cells turncoats that attack their tumor, mouse study finds," 11 July 2018 Understanding bee biology is crucial for all beginners, which is why Repasky requires first-timers to take a beekeeping class from an experienced, respected individual or organization. Blair Donovan, Country Living, "Beekeeping for Beginners: Everything to Know About Starting Your Own Colony," 5 Apr. 2019 Probably because biology doesn’t leave much room for uncertainty: The clock keeps ticking. Alyssa Mastromonaco, Marie Claire, "Alyssa Mastromonaco Explores Her Non-Decision to Not Have Kids," 5 Mar. 2019 The consideration of redefining gender as biology fits in the same vein. Dylan Scott, Vox, "White evangelicals turned out for the GOP in big numbers again," 7 Nov. 2018 People were just studying it in order to have a better understanding of how biology operates. John Timmer, Ars Technica, "Gene drive used to turn all female mosquitos sterile," 27 Sep. 2018 The biology and psychology of parenting are virtually outside of our control. Kaelyn Forde, Allure, "Why Women Are Making "Pre-Baby Bucket Lists" Filled With Goals to Accomplish Before Motherhood," 30 May 2018 The doctors work simultaneously but biology dictates the order in which the organs are removed. Shari Rudavsky, Indianapolis Star, "'This room becomes sacred.' The heroic and heartbreaking journey of one organ donor's body," 17 May 2018 The exam, given to fifth- and eighth-graders and students in their first high school biology course, was administered for the first time in the 2015-16 school year. Sarah Freishtat, Aurora Beacon-News, "Majority of Aurora students not proficient in science, exam results show," 15 Feb. 2018

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

10 May 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 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

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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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