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.
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   2. Mode of utterance or pronunciation, especially as regards
      fullness and distinctness or articulation; as, to speak
      with a clear or impressive enunciation.
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   3. That which is enunciated or announced; words in which a
      proposition is expressed; an announcement; a formal
      declaration; a statement.
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            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]