[ep-uh-zoh-ot-ik]Veterinary Medicine
See more synonyms for epizootic on Thesaurus.com
  1. an epizootic disease.

Origin of epizootic

First recorded in 1740–50; epi- + zo(o)- + -otic
Related formsep·i·zo·ot·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of epizootic

British Dictionary definitions for epizootic


  1. (of a disease) suddenly and temporarily affecting a large number of animals over a large area
  1. an epizootic diseaseCompare enzootic
Derived Formsepizootically, adverb
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

Word Origin and History for epizootic

animal equivalent of epidemic, 1748, from French épizootique, from épizootie, irregularly formed from Greek epi (see epi-) + zoon (see zoo).

Online Etymology Dictionary, © 2010 Douglas Harper

epizootic in Medicine


  1. Affecting a large number of animals at the same time within a particular region or geographic area. Used of a disease.
Related formsep′i•zo•otic n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

epizootic in Science


  1. Relating to a rapidly spreading disease that affects a large number of animals at the same time within a particular area.
  1. An epizootic disease.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.