Source : Webster's Revised Unabridged Dictionary (1913)

Actinozoa \Ac"ti*no*zo"a\, n. pl. [Gr. ?, ?, ray + zw^on
   animal.] (Zo["o]l.)
   A group of C[oe]lenterata, comprising the Anthozoa and
   Ctenophora. The sea anemone, or actinia, is a familiar
   example.

Source : WordNet®

Actinozoa
     n : no alternation of generations the medusoid phase being
         entirely suppressed: sea anemones; corals [syn: {Anthozoa},
          {class Anthozoa}, {class Actinozoa}]