trophozoite Syllabification: (troph·o·zo·ite)Pronunciation: /ˌträfəˈzōˌīt, ˌtrō-/Definition of trophozoite noun Zoology & Medicine a growing stage in the life cycle of some sporozoan parasites, when they are absorbing nutrients from the host. trophozoite in other Oxford dictionaries Definition of trophozoite in the British & World English dictionary