an·op·lo·ce·phal·i·dae \-sə̇ˈfaləˌdē\noun plural Usage: capitalized Etymology: New Latin, from Anoplocephala, type genus + -idae : a family of taenioid tapeworms with unarmed scolices that live as adults in the intestines of various herbivores and pass their larval stages in certain free-living mites