The Collaborative International Dictionary of English v.0.48:

Enfranchisement \En*fran"chise*ment\, n.
   1. Releasing from slavery or custody. --Shak.
      [1913 Webster]

   2. Admission to the freedom of a corporation or body politic;
      investiture with the privileges of free citizens.
      [1913 Webster]

   Enfranchisement of copyhold (Eng. Law), the conversion of a
      copyhold estate into a freehold. --Mozley & W.
      [1913 Webster]