- The branch of biology that deals with animals and animal life, including the study of the structure, physiology, development, and classification of animals. (noun)
- The animal life of a particular area or period: the zoology of Alaska; the zoology of the Pleistocene. (noun)
- The characteristics of a particular animal group or category: the zoology of mammals. (noun)
- A book or scholarly work on zoology. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.