strongylocentrotus

\\-ˈtrōd.əs\ noun

Usage: capitalized

Etymology: New Latin, from Greek strongylos round, compact + kentrōtos prickly, from kentroun to provide with a prick or sting, from kentron sharp point — more at strongylus, center

: a widely distributed genus of sea urchins (family Strongylocentrotidae) that includes the common green urchin (S. drobachiensis) of the No. American coasts and the small purple urchin (S. purpuratus) of the Pacific coast as well as other common forms