The Collaborative International Dictionary of English v.0.48:

Anguilliformes \Anguilliformes\ n.
   1. 1 an order of elongate fishes with pelvic fins and girdle
      absent or reduced.

   Syn: order Anguilliformes, order Apodes.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Anguilliformes
    n 1: elongate fishes with pelvic fins and girdle absent or
         reduced [syn: Anguilliformes, order Anguilliformes,
         order Apodes]