noun (n)

• an annoying or frustrating or catastrophic event(noun.event)

  Example:
  A visitation of the plague.
  

  Synonym:
  trial, tribulation
  

  source: wordnet30
• any disaster or catastrophe(noun.event)

  Example:
  A visitation of the plague.
  

  source: wordnet30
• an official visit for inspection or supervision(noun.act)

  Example:
  The commissioner made visitations to all the precinct stations.
  The recent visitation of the bishop to his diocese.
  

  source: wordnet30
• The act of visiting, or the state of being visited; access for inspection or examination.(noun)

  source: webster1913