radiolarian (redirected from Radiolarium)

ra·di·o·lar·i·an  (rd--lâr-n)

n.

Any of various marine protozoans of the order Radiolaria, having rigid siliceous skeletons and spicules.

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[From New Latin Radiolria, order name, from Late Latin radiolus, diminutive of Latin radius, ray.]

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radiolarian [ˌreɪdɪəʊˈlɛərɪən]

n

(Life Sciences & Allied Applications / Animals) any of various marine protozoans constituting the order Radiolaria, typically having a siliceous shell and stiff radiating cytoplasmic projections: phylum Actinopoda (actinopods)

[from New Latin Radiolaria, from Late Latin radiolus little sunbeam, from Latin radius ray, radius]

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radiolarian  (rd--lâr-n)

Any of various marine protozoans of the group Radiolaria, having rigid skeletons usually made of silica. The skeletons are usually spherically symmetrical and structurally complex, containing elaborate patterns of perforations (through which pseudopods extend) and often spicules. Skeletal remains of radiolarians sink to form ooze on the ocean floor, and prehistoric radiolarian ooze has fossilized to become chert and flint.

Thesaurus

Noun

1.

radiolarian - protozoa with amoeba-like bodies and radiating filamentous pseudopods actinopod - protozoa having stiff rodlike radiating pseudopods order Radiolaria, Radiolaria - marine protozoa

Translations

radiolarian

n (Zool) → Strahlentierchen nt, → Radiolarie f (spec)