The Collaborative International Dictionary of English v.0.48:

commercialisation \commercialisation\ n.
   same as commercialization. [Brit.]
   [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

commercialization \commercialization\ n.
   the act or process of making something commercial in
   character. See commercialize. [Also spelled
   commercialisation.]

   Syn: .
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

commercialisation
    n 1: the act of commercializing something; involving something
         in commerce; "my father considered the commercialization of
         Christmas to be a sacrilege"; "the government tried to
         accelerate the commercialization of this development";
         "both companies will retain control over the
         commercialization of their own products" [syn:
         commercialization, commercialisation]