ˌparəˈsīd.ə noun plural
Usage: capitalized
Etymology: New Latin, from Latin parasitus parasite
in former classifications : any of several groups of externally parasitic invertebrate animals: as
a. : a group comprising parasitic insects and arachnids
b. : an order or other group coextensive with Anoplura or comprising Anoplura and Mallophaga
c. : ectozoa