noun (n)

• improvement (or an intended improvement) in the existing form or condition of institutions or practices etc.; intended to make a striking change for the better in social or political or religious affairs(noun.state)

  source: wordnet30
• a religious movement of the 16th century that began as an attempt to reform the Roman Catholic Church and resulted in the creation of Protestant churches(noun.group)

  Synonym:
  protestant reformation
  

  source: wordnet30
• rescuing from error and returning to a rightful course(noun.act)

  Synonym:
  reclamation
  

  source: wordnet30
• The act of reforming, or the state of being reformed; change from worse to better; correction or amendment of life, manners, or of anything vicious or corrupt; as, the reformation of manners; reformation of the age; reformation of abuses.(noun)

  source: webster1913
• The act of forming anew; a second forming in order; as, the reformation of a column of troops into a hollow square.(noun)

  source: webster1913