any echinoderm of the subclass Ophiuroidea, including brittle stars, basket stars, and others, characterized by elongate arms radiating from the disk.
of or pertaining to the subclass Ophiuroidea.
< Neo-Latin Ophiuroidea
the class, equivalent to Ophiur
) the type genus (< Greek ophíoura,
feminine of ophíouros
) snake + -ouros
adj. derivative of ourá
tail)) + -oidea -oidea