noun (n)

• the act of offering an improvement to replace a mistake; setting right(noun.act)

  Synonym:
  rectification
  

  source: wordnet30
• a quantity that is added or subtracted in order to increase the accuracy of a scientific measure(noun.quantity)

  Synonym:
  fudge factor
  

  source: wordnet30
• something substituted for an error(noun.communication)

  source: wordnet30
• a rebuke for making a mistake(noun.communication)

  Synonym:
  chastening, chastisement
  

  source: wordnet30
• a drop in stock market activity or stock prices following a period of increases(noun.attribute)

  Example:
  Market runups are invariably followed by a correction.
  

  source: wordnet30
• the act of punishing(noun.act)

  Synonym:
  discipline, penalisation, penalization, penalty, punishment
  

  source: wordnet30
• treatment of a specific defect(noun.act)

  Example:
  The correction of his vision with eye glasses.
  

  source: wordnet30
• The act of correcting, or making that right which was wrong; change for the better; amendment; rectification, as of an erroneous statement.(noun)

  source: webster1913