The Collaborative International Dictionary of English v.0.48:

Pelecanidae \Pelecanidae\ prop. n.
   A natural family of birds consisting of the pelicans.

   Syn: family Pelecanidae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Pelecanidae
    n 1: pelicans [syn: Pelecanidae, family Pelecanidae]