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[rey-dee-ey-tuh, -ah-tuh]
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noun Biology.
  1. (in some classification systems) a major grouping that includes more or less radially symmetrical animals, as coelenterates (jellyfish, sea anemones, corals), ctenophores (comb jellies), and echinoderms (starfish, sea urchins, sea cucumbers).

Origin of Radiata

1820–30; < New Latin, noun use of neuter plural of Latin radiātus radiate (adj.)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for radiata

Historical Examples

  • It will be noticed that he separates the Radiata (Radiaires) from the Polypes.

    Lamarck, the Founder of Evolution

    Alpheus Spring Packard

  • Part I., containing the Radiata and Articulata, is now ready.

  • Thus, in the great division of radiata, we find asteriod and helianthoid zoophytes, besides crinoid and cystidean echinoderms.

  • Cuvier included them in his Radiata, a class comprising all the animals whose parts diverge or radiate from a central axis.

    The Sea-beach at Ebb-tide

    Augusta Foote Arnold

  • The lower type of animals, the Radiata, is almost exclusively marine.