ectozoon

[ ek-tuh-zoh-on, -uhn ]

/ ˌɛk təˈzoʊ ɒn, -ən /

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noun, plural ec·to·zo·a

[ek-tuh-zoh-uh]. /ˌɛk təˈzoʊ ə/. Biology.

any animal parasite, as the louse, that lives on the surface of its host (opposed to entozoon).

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Also ectozoan.

Origin of ectozoon

First recorded in 1855–60; ecto- + -zoon

Words nearby ectozoon

ectotherm, ectotrophic, ectotrophic mycorrhiza, ectozoan, ectozoic, ectozoon, Ectrin, ectrodactylism, ectromelia, ectype, ECU

How to use ectozoon in a sentence

The most common ectozoon is the hog louse (Hmatopinus suis).
Parasites|T. Spencer Cobbold
Another ectozoon, placed by Mgnin and others amongst the lowest types of Arachnida, is the well-known Demodex folliculorum.
Parasites|T. Spencer Cobbold