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单词 radiolarian
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ra•di•o•lar•i•an  (rā′dē ō lâr′ē ən),USA pronunciation n. 
  1. Microbiologyany 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.
  • Neo-Latin Radiolari(a) name of the group (Latin radiol(us) a small beam, equivalent. to radi(us) radius + -olus -ole1 + -aria -aria) + -an
  • 1875–80

Collins Concise English Dictionary © HarperCollins Publishers::
radiolarian /ˌreɪdɪəʊˈlɛərɪən/ n
  1. any of various marine protozoans constituting the order Radiolaria, typically having a siliceous shell and stiff radiating cytoplasmic projections: phylum Actinopoda (actinopods)
Etymology: 19th Century: from New Latin Radiolaria, from Late Latin radiolus little sunbeam, from Latin radius ray, radius
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更新时间：2025/7/31 12:18:25