Radiolaria
Radiolaria (rā`di*o*lā"ri*ȧ) , noun, plural
[New Latin See Radioli.]
(Zoology) Order of rhizopods, usually having a siliceous skeleton, or shell, and sometimes radiating spicules. The pseudopodia project from the body like rays. It includes the polycystines. See Polycystina.