noun (n)

• the event of something appearing again(noun.event)

  Example:
  The reappearance of Halley's comet.
  

  source: wordnet30
• the act of someone appearing again(noun.act)

  Example:
  His reappearance as Hamlet has been long awaited.
  

  Synonym:
  return
  

  source: wordnet30
• A second or new appearance; the act or state of appearing again.(noun)

  source: webster1913