单词	radiolarian
释义	radiolarian noun ra·​di·​o·​lar·​i·​an ˌrā-dē-ō-ˈler-ē-ən  : any of three classes (Acantharia, Polycystina, and Phaeodaria) of usually spherical chiefly planktonic marine protozoans having radiating threadlike pseudopodia and often a siliceous skeleton of spicules radiolarian adjective Illustration of radiolarian Example Sentences Recent Examples on the Web The organic carbon decline coincided with the disappearance of more than 50 species of radiolarians, which served as a food source for numerous marine species and whose disappearance was an indicator of a major biological crisis. Reuters, WIRED, 10 May 2001 Word History First Known Use 1869, in the meaning defined above
随便看	not-for-profit not-go gage not-self nota nota bene notabilia notabilities notability notable notableness notablenesses notabler notables notablest notablier notabliest notably notacanth notacanthid Notacanthidae notacanthous notae Tironianae notaea notaeal notaeum

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