cor·rec·tion 
/kəˈrɛkʃən/ noun
plural cor·rec·tions /kəˈrɛkʃən/ noun 1 [count] : a change that makes something right, true, accurate, etc.
▪ They ran/published a correction in today's paper. [=there was a statement in the newspaper saying that something printed in an earlier newspaper was not accurate] ▪ The teacher marked corrections on his students' tests. ▪ Please make corrections before handing in your compositions. 2 [noncount] : the act of making something (such as an error or a bad condition) accurate or better : the act of correcting something
▪ the correction of your mistakes ▪ people in need of vision correction 3 : the act or process of punishing and changing the behavior of people who have committed crimes [noncount] ▪ (old-fashioned) correction of criminals [plural] (US) — used to refer to government systems and actions that relate to punishing and dealing with criminals ▪ The state's overall spending on corrections has increased rapidly in recent years. ▪ the state Department of Corrections — often used before another noun ▪ a corrections officer [=an official in a jail or prison]
▪ They ran/published a correction in today's paper. [=there was a statement in the newspaper saying that something printed in an earlier newspaper was not accurate] ▪ The teacher marked corrections on his students' tests. ▪ Please make corrections before handing in your compositions.
▪ the correction of your mistakes ▪ people in need of vision correction
— cor·rec·tion·al /kəˈrɛkʃənl̟/ adjective always used before a noun chiefly US
▪ the state's correctional facilities/institutions [=prisons or jails]
/kəˈrɛkʃənl̟/ adjective always used before a noun chiefly US ▪ the state's correctional facilities/institutions [=prisons or jails]
