ˌ ̷ ̷ ̷ ̷ˈn(y)u̇rə noun plural
Usage: capitalized
Etymology: New Latin, from strept- + -neura
: a large subclass of Gastropoda including the majority of marine, some freshwater, and the operculate land gastropods having the loop of visceral nerves twisted into a figure 8 with the right half crossing in dextral forms above the left, sexes usually separate, and in most forms an operculum