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Radiata1 /ˌreɪdɪˈaːtə/Zoology nounTreated as plural. A major group of animals containing invertebrates whose body plan shows a radial structure: (originally) a division including coelenterates, echinoderms, and various intestinal and other worms (now historical ); (now) a group comprising the cnidarians and ctenophores. (Also in form radiata) animals of this group (collectively or individually).- The Radiata (or Animalia radiata) formed one of the four divisions or embranchements of the animal kingdom in Cuvier's system, but this classification was abandoned in the light of more detailed understanding of the anatomy of the various groups, especially the echinoderms. Its use for coelenterates in modern classifications is a later revival of the term..
Origin Early 19th century; earliest use found in John Stark (fl. 1828). From scientific Latin Radiata, neuter plural of classical Latin radiātus. radiata2 /reɪdɪˈeɪtə/Chiefly NZ nounIn full radiata pine. = Monterey pine. Origin 1950s; earliest use found in New Zealand Journal Forestry. From scientific Latin radiata, specific epithet from classical Latin radiātus. |