ˌikthēäfˈthirēəs noun
Etymology: New Latin, from ichthy- + -phthirius (from Phthirius )
1. capitalized : a genus of oval holotrichous ciliates comprising a single species ( I. multifiliis ) that are parasitic in the skin of various freshwater fishes where they encyst and multiply causing a severe and sometimes fatal inflammation
2. -es : ich