The Collaborative International Dictionary of English v.0.48:

Denunciation \De*nun`ci*a"tion\, n. [L. denuntiatio, -ciatio.]
   1. Proclamation; announcement; a publishing. [Obs.]
      [1913 Webster]

            Public . . . denunciation of banns before marriage.
                                                  --Bp. Hall.
      [1913 Webster]

   2. The act of denouncing; public menace or accusation; the
      act of inveighing against, stigmatizing, or publicly
      arraigning; arraignment.
      [1913 Webster]

   3. That by which anything is denounced; threat of evil;
      public menace or accusation; arraignment.
      [1913 Webster]

            Uttering bold denunciations of ecclesiastical error.
                                                  --Motley.
      [1913 Webster]

WordNet (r) 3.0 (2006):

denunciation
    n 1: a public act of denouncing [syn: denunciation,
         denouncement]