Wordnet 3.0
VERB (1)
1. 
 grant freedom to; 
 as from slavery or servitude; 
- Example: "Slaves were enfranchised in the mid-19th century"[syn: affranchise, enfranchise]
The Collaborative International Dictionary of English v.0.48:
Affranchise \Af*fran"chise\, v. t. [F. affranchir; ? (L. ad) +
   franc free. See Franchise and Frank.]
   To make free; to enfranchise. --Johnson.
   [1913 Webster]
WordNet (r) 3.0 (2006):
affranchise
    v 1: grant freedom to; as from slavery or servitude; "Slaves
         were enfranchised in the mid-19th century" [syn:
         affranchise, enfranchise]