| radiolaria | (n) marine protozoa, Syn. order Radiolaria |
| radiolarian | (n) protozoa with amoeba-like bodies and radiating filamentous pseudopods |
| Radiolaria | ‖n. pl. [ NL. See Radioli. ] (Zool.) 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. [ 1913 Webster ] |
| Radiolarian | a. (Zool.) Of or pertaining to the Radiolaria. -- |