From Longman Dictionary of Contemporary Englishcorrectionalcor‧rec‧tion‧al /kəˈrekʃənəl/ adjective [only before noun] technical SCJrelating to the punishment of criminalscorrectional facility/institution/centre (=a prison)
Examples from the Corpus
correctional• He was found unconscious with a bedsheet round his neck, a correctional services spokesman said.• Clearly there are times when correctional staff and professionals come into conflict over their aims.• I think the evidence now shows that that is simply not true, so there was correctional work to do there. 