lit·to·ri·na \ˌlid.əˈrīnə, -rēnə\noun Usage: capitalized Etymology: New Latin, from Latin littor-, littus seashore + New Latin -ina : the type genus of Littorinidae comprising the typical littoral marine periwinkles • lit·to·ri·noid\| ̷ ̷ ̷ ̷| ̷ ̷ˌnȯid\adjective