nəˈtisəˌdē noun plural
Usage: capitalized
Etymology: New Latin, from Natica, type genus + -idae
: a family of carnivorous marine gastropod mollusks (suborder Taenioglossa) that have strong globose umbilicate shells, a long retractile proboscis, and a firm dark-colored operculum and that deposit their eggs in firm sandy ribbons — see moon shell , natica , sand collar