The Collaborative International Dictionary of English v.0.48:

Hyaenidae \Hyaenidae\ prop. n.
   A natural family of canids comprising the hyenas.

   Syn: family Hyaenidae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Hyaenidae
    n 1: hyenas [syn: Hyaenidae, family Hyaenidae]