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[bahy-ol-uh-jee] /baɪˈɒl ə dʒi/
the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior.
the living organisms of a region:
the biology of Pennsylvania.
the biological phenomena characteristic of an organism or a group of organisms:
She is studying the biology of worms, especially in regard to their reproductive behavior.
Origin of biology
From the German word Biologie, dating back to 1805-15. See bio-, -logy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for biology
Contemporary Examples
Historical Examples
  • They know everything about biology, but almost nothing about life.

    Alarms and Discursions G. K. Chesterton
  • Why this should be so is one of the most profound problems of biology.

    The Meaning of Evolution Samuel Christian Schmucker
  • His progress, and the progress of thousands of other researchers in biology, must have been watched.

    Forever Robert Sheckley
  • What are the general adaptive contributions of biology to human nature?

    College Teaching Paul Klapper
  • What are the results in the individual which biology should aim to bring to every student?

    College Teaching Paul Klapper
British Dictionary definitions for biology


the study of living organisms, including their structure, functioning, evolution, distribution, and interrelationships
the structure, functioning, etc, of a particular organism or group of organisms
the animal and plant life of a particular region
Derived Forms
biologist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for biology

1819, from Greek bios "life" (see bio-) + -logy. Suggested 1802 by German naturalist Gottfried Reinhold Treviranus (1776-1837), and introduced as a scientific term that year in French by Lamarck.

Online Etymology Dictionary, © 2010 Douglas Harper
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biology in Medicine

biology bi·ol·o·gy (bī-ŏl'ə-jē)

  1. The science of life and of living organisms, including their structure, function, growth, origin, evolution, and distribution. It includes botany and zoology.

  2. The life processes or characteristic phenomena of a group or category of living organisms.

bi·ol'o·gist n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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biology in Science
The scientific study of life and of living organisms. Botany, zoology, and ecology are all branches of biology.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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biology in Culture

biology definition

The study of life and living systems.

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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