Radiata

[ rey-dee-ey-tuh, -ah-tuh ]

nounBiology.

(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 radiātusradiate (adj.)

Both the vitelline membrane and the zona Radiata are found in Raja, but in a much less developed condition than in Scyllium.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
The stage of about the greatest development of both the vitelline membrane and zona Radiata is represented on Pl.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
The inner one is the zona Radiata with a typical radiately striated structure.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
Osseous fish have almost always a zona Radiata, which it seems best to assume to be equivalent to that in Elasmobranchii.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
In Petromyzon, a zona Radiata appears to be present, which is divided in the adult into two layers, both of them perforated.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour

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