The Collaborative International Dictionary of English v.0.48:

Exportation \Ex`por*ta"tion\, n. [L. exportatio: cf. F.
   exporation.]
   1. The act of exporting; the act of conveying or sending
      commodities abroad or to another country, in the course of
      commerce.
      [1913 Webster]

   2. Commodity exported; an export.
      [1913 Webster]

   3. The act of carrying out. [R.] --Bourne.
      [1913 Webster]

WordNet (r) 3.0 (2006):

exportation
    n 1: commodities (goods or services) sold to a foreign country
         [syn: export, exportation] [ant: import,
         importation]
    2: the commercial activity of selling and shipping goods to a
       foreign country [syn: exporting, exportation]