WordWeb Online

1. The travel of a commuter
   - commuting
    
2. A warrant substituting a lesser punishment for a greater one
    
3. (law) the reduction in severity of a punishment imposed by law
   - re-sentencing
    
4. The act of putting one thing or person in the place of another
   "he sent Smith in for Jones but the commutation came too late to help"
   - substitution, exchange

Derived forms: commutations

See also: commute

Type of: change, clemency, mercifulness, mercy, travel, traveling [US], travelling [Brit, Cdn], warrant

Encyclopedia: Commutation