From Longman Dictionary of Contemporary Englishcommutationcom‧mu‧ta‧tion /ˌkɒmjəˈteɪʃən $ ˌkɑː-/ noun [countable, uncountable] lawSCL a reduction in how severe a punishment is Activists campaigned for a commutation of Lee’s sentence.
Examples from the Corpus
commutation• Since 1900, presidents have issued 13,638 pardons and 6,309 commutations of sentence.• During his last-minute flurry of pardons and commutations before leaving office, Clinton reduced their sentences to 24 to 30 months.• The bridge is a major commutation route.• The former president has denied granting any pardons or commutations for any reason other than the merits.• Of course ordinary numbers do have this commutation property; 2 x 3 and 3 x 2 are both undoubtedly 6.From Longman Business Dictionarycommutationcom‧mu‧ta‧tion /ˌkɒmjəˈteɪʃənˌkɑː-/ noun [countable] INSURANCE a single large payment instead of a series of future paymentsThe assets of the insurer will be used to make a single, final payment, called a commutation, to policyholders. 