Source : Webster's Revised Unabridged Dictionary (1913)

Alcyonaria \Al`cy*o*na"ri*a\, n. pl. [NL.] (Zo["o]l.)
   One of the orders of Anthozoa. It includes the Alcyonacea,
   Pennatulacea, and Gorgonacea.

Source : WordNet®

Alcyonaria
     n : corals and sea anemones having eight branches [syn: {order
         Alcyonaria}]