noun (n)

• a formal public statement(noun.communication)

  Synonym:
  announcement, annunciation, declaration
  

  source: wordnet30
• the formal act of proclaiming; giving public notice(noun.act)

  Synonym:
  promulgation
  

  source: wordnet30
• The act of proclaiming; official or general notice; publication.(noun)

  source: webster1913