radiolarian

ra·di·o·lar·i·an

R0015400 (rā′dē-ō-lâr′ē-ən)n. Any of various marine protozoans of the order (or phylum) Radiolaria, having rigid siliceous skeletons and spicules.

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[From New Latin Radiolāria, order name, from Late Latin radiolus, diminutive of Latin radius, ray, spoke (in reference to their spicules); see ray¹.]

radiolarian

(ˌreɪdɪəʊˈlɛərɪən) n (Animals) any of various marine protozoans constituting the order Radiolaria, typically having a siliceous shell and stiff radiating cytoplasmic projections: phylum Actinopoda (actinopods)[C19: from New Latin Radiolaria, from Late Latin radiolus little sunbeam, from Latin radius ray, radius]

ra•di•o•lar•i•an

(ˌreɪ di oʊˈlɛər i ən)

n. any of various very small marine protozoans of the class Radiolaria (or superclass Actinopoda), having slender radiating pseudopods and usu. bearing an elaborate outer skeleton. [1875–80; < New Latin Radiolari(a) (Latin radiol(us) a small beam (radi(us) radius + -olus -ole¹) + -aria -aria) + -an¹]

Thesaurus

Noun

1.

radiolarian - protozoa with amoeba-like bodies and radiating filamentous pseudopodsactinopod - protozoa having stiff rodlike radiating pseudopodsorder Radiolaria, Radiolaria - marine protozoa

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