The Collaborative International Dictionary of English v.0.48:

Incitation \In`ci*ta"tion\, n. [L. incitatio: cf. F.
   incitation.]
   [1913 Webster]
   1. The act of inciting or moving to action.
      [1913 Webster]

   2. That which incites to action; that which rouses or
      prompts; incitement; motive; incentive.
      [1913 Webster]

            The noblest incitation to honest attempts. --Tatler.
      [1913 Webster]

WordNet (r) 3.0 (2006):

incitation
    n 1: something that incites or provokes; a means of arousing or
         stirring to action [syn: incitement, incitation,
         provocation]
    2: an act of urging on or spurring on or rousing to action or
       instigating; "the incitement of mutiny" [syn: incitation,
       incitement]