What is 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. Arbuthnot called?

commutation — 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. Arbuthnot. (Webster's 1913.)

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