prīˌapyəˈlȯidēə noun plural
Usage: capitalized
Etymology: New Latin, from Priapulus, genus of marine worms (from priapus phallus + -ulus -ule) + -oidea
: a group of marine worms of obscure position that are classed as a division of Gephyrea and that somewhat resemble the Sipunculoidea from which they are distinguished by the absence of tentacles and usually by the presence of caudal gills