noun (n)

• the speech act of making something evident(noun.communication)

  Synonym:
  disclosure, revealing
  

  source: wordnet30
• an enlightening or astonishing disclosure(noun.cognition)

  source: wordnet30
• communication of knowledge to man by a divine or supernatural agency(noun.communication)

  Synonym:
  divine revelation
  

  source: wordnet30
• the last book of the New Testament; contains visionary descriptions of heaven and of conflicts between good and evil and of the end of the world; attributed to Saint John the Apostle(noun.communication)

  Synonym:
  apocalypse, book of revelation, revelation of saint john the divine
  

  source: wordnet30
• The act of revealing, disclosing, or discovering to others what was before unknown to them.(noun)

  source: webster1913