1. (adj)endoparasite, entoparasite, entozoan, entozoon, endozoan any of various parasites that live in the internal organs of animals (especially intestinal worms)
2. (adj)entozoan, endozoan of or relating to entozoa
3. (adj)entozoic, entozoan, endozoic living within a livinganimal usually as a parasite "entozoic worms"