any of several classes of one-celled deep-sea protozoans with long, slender pseudopodia and a spiny, or solid but perforated, skeleton of silica
Origin of radiolarian; from Modern Latin Radiolaria ; from radiolus, diminutive of Classical Latin radius, ray (see radius): from the radiating pseudopodia
Any of various marine protozoans of the order (or phylum) Radiolaria, having rigid siliceous skeletons and spicules.
Origin of radiolarianFrom New Latin Radiol&amacron;ria, order name, from Late Latin radiolus, diminutive of Latin radius, ray.
(plural radiolaria or radiolarians)
From New Latin radiolaria +"Ž -an