The Collaborative International Dictionary of English v.0.48:

Expatriate \Ex*pa"tri*ate\, v. t. [imp. & p. p. Expatriated;
   p. pr. & vb. n. Expatriating.] [LL. expatriatus, p. p. of
   expatriare; L. ex out + patria fatherland, native land, fr.
   pater father. See Patriot.]
   1. To banish; to drive or force (a person) from his own
      country; to make an exile of.
      [1913 Webster]

            The expatriated landed interest of France. --Burke.
      [1913 Webster]

   2. Reflexively, as To expatriate one's self: To withdraw from
      one's native country; to renounce the rights and
      liabilities of citizenship where one is born, and become a
      citizen of another country.
      [1913 Webster]