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ectozoon

American  
[ek-tuh-zoh-on, -uhn] / ˌɛk təˈzoʊ ɒn, -ən /

noun

Biology.
ectozoa plural

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

Etymology

Origin of ectozoon

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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