n.1. The act or process of correcting.
2. Something offered or substituted for a mistake or fault: made corrections in the report.
3. a. Punishment intended to rehabilitate or improve.
b. often corrections The treatment of offenders through a system of penal incarceration, rehabilitation, parole, and probation, or the administrative system by which these are effectuated.
4. An amount or quantity added or subtracted in order to correct.
5. A temporary decline in stock-market activity or prices following a period of increases.