correction (

     n 1: the act of offering an improvement to replace a mistake
          [syn: rectification]
     2: a quantity that is added or subtracted in order to increase
        the accuracy of a scientific measure [syn: fudge factor]
     3: something substituted for an error
     4: a rebuke for making a mistake [syn: chastening, chastisement]
     5: the act of punishing; "the offenders deserved the harsh
        discipline they received" [syn: discipline]
     6: treatment of a specific defect; "the correction of his
        vision with eye glasses"