The Collaborative International Dictionary of English v.0.48:

pedophilia \pedophilia\ n.
   A sexual perversion in which children rather than adults most
   strongly excite sexual desire, and are used as sexual
   partners.
   [PJC]

WordNet (r) 3.0 (2006):

pedophilia
    n 1: a sexual attraction to children [syn: pedophilia,
         paedophilia]