![radiata radiata](https://www.tekportal.net/wp-content/uploads/2018/11/radiata.jpg)
noun Biology.
- (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).