The Collaborative International Dictionary of English v.0.48:

Hamamelidaceae \Hamamelidaceae\ n.
   A natural family of plants comprising the genera Hamamelis;
   Corylopsis; Fothergilla; Liquidambar; Parrotia; and
   other small genera.

   Syn: family Hamamelidaceae, witch-hazel family.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Hamamelidaceae
    n 1: comprises genera Hamamelis, Corylopsis, Fothergilla,
         Liquidambar, Parrotia, and other small genera [syn:
         Hamamelidaceae, family Hamamelidaceae, witch-hazel
         family]