The Collaborative International Dictionary of English v.0.48:

Enunciation \E*nun`ci*a"tion\ (?; 277), n. [L. enuntiatio,
   -ciatio.]
   1. The act of enunciating, announcing, proclaiming, or making
      known; open attestation; declaration; as, the enunciation
      of an important truth.
      [1913 Webster]

            By way of interpretation and enunciation. --Jer.
                                                  Taylor.
      [1913 Webster]

   2. Mode of utterance or pronunciation, especially as regards
      fullness and distinctness or articulation; as, to speak
      with a clear or impressive enunciation.
      [1913 Webster]

   3. That which is enunciated or announced; words in which a
      proposition is expressed; an announcement; a formal
      declaration; a statement.
      [1913 Webster]

            Every intelligible enunciation must be either true
            or false.                             --A. Clarke.
      [1913 Webster]

WordNet (r) 3.0 (2006):

enunciation
    n 1: the articulation of speech regarded from the point of view
         of its intelligibility to the audience [syn: enunciation,
         diction]

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "enunciation":
   affirmance, affirmation, allegation, announcement, annunciation,
   articulation, assertion, asseveration, attack, averment,
   avouchment, avowal, bulletin board, circular, communique,
   conclusion, creed, declaration, delivery, dictum, edict,
   encyclical, ipse dixit, manifesto, notice, notification, phonation,
   position, position paper, positive declaration, predicate,
   predication, proclamation, profession, program, programma,
   pronouncement, pronunciamento, pronunciation, proposition, protest,
   protestation, public notice, report, say, say-so, saying, stance,
   stand, statement, ukase, utterance, vocalization, voicing, vouch,
   white book, white paper, word