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Meaning of radiolarian

ra•di•o•lar•i•an

Pronunciation: (rā"dē-ō-lâr'ē-un), [key]
— n.
  1. any minute, marine protozoan of the class Radiolaria, or, in some classification schemes, the superclass Actinopoda, having an amebalike body with radiating, filamentous pseudopodia and a usually elaborate outer skeleton.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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