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Occurring at the same time among an unusually large number of animals in a particular geographic area. Used of a disease.
An epizootic disease.

ep′i·zo·ot′i·cal·ly adv.


(Veterinary Science) (of a disease) suddenly and temporarily affecting a large number of animals over a large area
(Veterinary Science) an epizootic disease. Compare enzootic
ˌepizoˈotically adv


(ˌɛp ə zoʊˈɒt ɪk)

1. (of a disease) spreading quickly among animals. Compare enzootic (def. 1).
2. an epizootic disease.
[1740–50; < French épizootique, on the model of épidémique epidemic; see epi-, zoo-, -otic]
ep`i•zo•ot′i•cal•ly, adv.

epizootic, epizooty

a disease affecting many animals at the same time; an epidemic amongst animals. — epizootic, adj.
See also: Animals
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.epizootic - (of animals) epidemic among animals of a single kind within a particular region; "an epizootic disease"
animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement
epidemic - (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously; "an epidemic outbreak of influenza"
References in periodicals archive ?
Mycotic Involvement in Epizootic Ulcerative Syndrome of Freshwater Fishes of Bangladesh: A Histopathological Study.
Status of research program on relationships between epizootic ulcerative syndrome in fishes and the environment.
The Kingdom has imposed a temporary ban on the import of live catfish from South Africa due to a new suspected outbreak of the Epizootic Ulcerative Syndrome (EUS) disease.
Over the past two decades, Epizootic Ulcerative Syndrome (EUS) is a serious condition affecting a large number of wild and cultured freshwater finfish species.
1979); in Asian cichlid fish (Etroplus suratensis) with epizootic ulcerative syndrome (Pathiratne and Rajapakshe, 1998); in rainbow trout (Oncorhynchus mykiss) with ulcerous dermatitis (Rehulka, 1998); in rainbow trout experimentally infected with Aeromonas sobria and A.