- any animal parasite, as the louse, that lives on the surface of its host (opposed to entozoon).
Origin of ectozoon
Examples from the Web for ectozoa
Historical Examples of ectozoa
In reference to the ectozoa of rodents it may be said that they are very numerous.
The ectozoa of birds are too numerous to be dealt with in these pages.
In like manner a great deal has been written respecting the ectozoa of fishes.
The ectozoa of the dog, though not numerous as species, are of importance in relation to mange.
It conveniently stands thus, moreover, in direct contradiction to the term Ectozoa.
- An animal parasite, such as a flea or louse, living on the exterior of the host organism.