1action or the process of commuting a judicial sentence.
the conversion of a legal obligation or entitlement into another form, e.g., the replacement of an annuity or series of payments by a single payment.
2the process of commutating an electric current.
3 Mathematics the property of having a commutative relation.
Origin:
late Middle English (in the sense 'exchange, barter', later 'alteration'): from Latin commutatio(n-), from commutare 'exchange, interchange' (see commute). sense 1 dates from the late 16th century