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 (ĕp′ĭ-zō′ŏn, -ən)
n. pl. ep·i·zo·a (-zō′ə)
An epizoic organism.


n, pl -zoa (-ˈzəʊə)
(Zoology) an animal, such as a parasite, that lives on the body of another animal
[C19: New Latin, from epi- + Greek zōion animal]
ˌepiˈzoan adj


(ˌɛp əˈzoʊ ɒn, -ən)

also ep`i•zo′ite,

n., pl. -zo•a (-ˈzoʊ ə) also -zo•ites.
an external parasite or commensal on the body of an animal.
[1830–40; epi- + -zoon]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.epizoon - any external parasitic organism (as fleas)
parasite - an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host
flea - any wingless bloodsucking parasitic insect noted for ability to leap