Strongylocentrotus

noun
Stron·gy·lo·cen·tro·tus | \ -ˈtrōtəs \

Definition of Strongylocentrotus 

: a widely distributed genus of sea urchins (family Strongylocentrotidae) that includes the common green urchin (S. drobachiensis) of the North American coasts and the small purple urchin (S. purpuratus) of the Pacific coast as well as other common forms

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History and Etymology for Strongylocentrotus

New Latin, from Greek strongylos round, compact + kentrōtos prickly, from kentroun to provide with a prick or sting, from kentron sharp point

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