D defs.my
Entry 1 sense Webster, 1913

Radiolaria

/(rā`dĭ*ō̇*lā"rĭ*ȧ)/ · Ra·di·o·la·ri·a · IPA /ˌɹeɪ.di.oʊˈlɛɹi.ə/
01 n. pl. Order of rhizopods, usually having a siliceous skeleton, or shell, and sometimes radiating spicules. The pseudopodia project from the body …
  1. 1.
    Order of rhizopods, usually having a siliceous skeleton, or shell, and sometimes radiating spicules. The pseudopodia project from the body like rays. It includes the polycystines. See Polycystina.(Zool.) See: Polycystina