The Collaborative International Dictionary of English v.0.48:

Liparidae \Liparidae\, Liparididae \Liparididae\n.
   A natural family including the snailfishes.

   Syn: family Liparididae, family Liparidae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Liparididae
    n 1: snailfishes [syn: Liparididae, family Liparididae,
         Liparidae, family Liparidae]