[ek-tuh-zoh-on, -uh n]
- any animal parasite, as the louse, that lives on the surface of its host (opposed to entozoon).
Origin of ectozoon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- An animal parasite, such as a flea or louse, living on the exterior of the host organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.