ectozoon

ectozoon

[ek-tuh-zoh-on, -uhn]
noun, plural ectozoa [ek-tuh-zoh-uh] . Biology.
any animal parasite, as the louse, that lives on the surface of its host (opposed to entozoon ).
Also, ectozoan.


Origin:
1855–60; ecto- + -zoon

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ectozoon ec·to·zo·on (ěk'tə-zō'ŏn')
n. pl. ec·to·zo·a (-zō'ə)
An animal parasite, such as a flea or louse, living on the exterior of the host organism.

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