cor·rec·tion / kəˈrekshən/ • n. the action or process of correcting something: I checked the typing for errors and sent it back for correction. ∎ a change that rectifies an error or inaccuracy. ∎ used to introduce an amended version of something one has just said: after today—correction, she thought grimly, after tonight—she'd never see him again. ∎ a quantity adjusting a numerical result to allow for a departure from standard conditions. ∎ a temporary reversal in an overall trend of stock market prices, esp. a brief fall during an overall increase. ∎ punishment, esp. that of criminals in prison intended to rectify their behavior.