The Collaborative International Dictionary of English v.0.48:

Gorgonacea \Gor`go*na"ce*a\ (g[^o]r`g[-o]*n[=a]"sh[-e]*[.a]), n.
   pl. [NL.] (Zool.)
   See Gorgoniacea.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Gorgonacea
    n 1: red corals and sea fans [syn: Gorgonacea, suborder
         Gorgonacea, Gorgoniacea, suborder Gorgoniacea]