1.A passing from one state to another; change; alteration; mutation. (R.) "So great is the commutation that the soul then hated only that which now only it loves."
2.The act of giving one thing for another; barter; exchange. (Obs.) "The use of money is... that of saving the commutation of more bulky commodities."
3.(Law) The change of a penalty or punishment by the pardoning power of the State; as, the commutation of a sentence of death to banishment or imprisonment. "Suits are allowable in the spiritual courts for money agreed to be given as a commutation for penance."
4.A substitution, as of a less thing for a greater, esp. a substitution of one form of payment for another, or one payment for many, or a specific sum of money for conditional payments or allowances; as, commutation of tithes; commutation of fares; commutation of copyright; commutation of rations.
5.Regular travel from a place of residence to a place where one's daily work is performed; commuting. Most often, such travel is performed between a suburb and a nearby city.