Source : Webster's Revised Unabridged Dictionary (1913)

Negotiation \Ne*go`ti*a"tion\, n. [L. negotiatio: cf. F.
   n['e]gociation.]
   1. The act or process of negotiating; a treating with another
      respecting sale or purchase. etc.

   2. Hence, mercantile business; trading. [Obs.]

            Who had lost, with these prizes, forty thousand
            pounds, after twenty years' negotiation in the East
            Indies.                               --Evelyn.

   3. The transaction of business between nations; the mutual
      intercourse of governments by diplomatic agents, in making
      treaties, composing difference, etc.; as, the negotiations
      at Ghent.

            An important negotiation with foreign powers.
                                                  --Macaulay.

Source : WordNet®

negotiation
     n 1: a discussion intended to produce an agreement; "the buyout
          negotiation lasted several days"; "they disagreed but
          kept an open dialogue"; "talks between Israelis and
          Palestinians" [syn: {dialogue}, {talks}]
     2: the activity or business of negotiating an agreement; coming
        to terms