Ec`to·zo'ön noun ; plural Ectozoa . [ New Latin , from Greek 'ekto`s outside outside + zw^,on an animal.] (Zoology) See Epizoön . Found on http://www.encyclo.co.uk/webster/E/8
ectozoon (s), ectozoa (pl) 1. An animal organism living externally on another animal. 2. Ectozoon parasiticum (plural, ectozoa parasitica), a parasitic ectozoon; an ectozoic parasite. Related 'animal' units: anima-; faun-; therio-. Found on http://www.wordinfo.info/words/index/info/view_unit/2733/3