Source : Webster's Revised Unabridged Dictionary (1913)

Percoidea \Per*coi"de*a\, n. pl. [NL.] (Zo["o]l.)
   Same as {Perciformes}.

Source : WordNet®

Percoidea
     n : in some classifications nearly or exactly equivalent to the
         Perciformes which are considered a suborder [syn: {suborder
         Percoidea}]