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ectozoon

American

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

noun

Biology.

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

Other Word Forms

Noun Inflected Forms

ectozoa

plural

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.