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biology

American  
[bahy-ol-uh-jee] / baɪˈɒl ə dʒi /

noun

  1. the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior.

  2. the living organisms of a region.

    the biology of Pennsylvania.

  3. 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.


biology British  
/ baɪˈɒlədʒɪ /

noun

  1. the study of living organisms, including their structure, functioning, evolution, distribution, and interrelationships

  2. the structure, functioning, etc, of a particular organism or group of organisms

  3. the animal and plant life of a particular region

"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

biology Scientific  
/ bī-ŏlə-jē /
  1. The scientific study of life and of living organisms. Botany, zoology, and ecology are all branches of biology.


biology Cultural  
  1. The study of life and living systems.


Other Word Forms

  • biologist noun

Etymology

Origin of biology

From the German word Biologie, dating back to 1805–15. See bio-, -logy

Compare meaning

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He’d hoped to assist in teaching a biology course after retiring, he said, but every attempt had gone nowhere.

From The Wall Street Journal

He didn’t know the first thing about biology, but he did know he could bring the lessons of Lambeau to this AI lab.

From The Wall Street Journal

Evolutionary biology explains this contrast through a basic principle: energy is limited, and species must divide it between reproduction and maintaining their bodies.

From Science Daily

Although these applications remain far off, the underlying biology is becoming clearer.

From Science Daily

Understanding how life began on Earth requires knowing how stars distribute the elements that make planets and biology possible.

From Science Daily