Source : Webster's Revised Unabridged Dictionary (1913)

Emigration \Em`i*gra"tion\, n. [L. emigratio: cf. F.
   ['e]migration.]
   1. The act of emigrating; removal from one country or state
      to another, for the purpose of residence, as from Europe
      to America, or, in America, from the Atlantic States to
      the Western.

   2. A body emigrants; emigrants collectively; as, the German
      emigration.

Source : WordNet®

emigration
     n : migration from a place (especially migration from your
         native country in order to settle in another) [syn: {out-migration},
          {expatriation}]