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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
1805-15; < German Biologie. See bio-, -logy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for biology
  • Successful aquaculture takes into consideration the biology of the aquatic.
  • Deception and betrayal ensue when an Oxford student agrees to participate in a study of the biology of human emotions.
  • Killer whales, cuddly otters, and jogging shrimp are great reasons to be excited about marine biology.
  • What we were looking for in biology was simplicity and elegance.
  • The project will examine signaling pathways in stem cell biology.
  • Experience in neural stem cell biology is an advantage but is not required.
  • Some researchers today say the worries about synthetic biology are also unnecessary, and current regulations are sufficient.
  • Synthetic biology is an emerging area of research, which applies engineering principles to biology.
  • When the biology class went badly, he and his advisers discussed options, including retaking the class.
  • Strong molecular biology training is required, .
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 American Heritage® 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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