n. 1. A substitution, exchange, or interchange. 2. a. The substitution of one kind of payment for another. b. The payment substituted. 3. The travel of a commuter. 4. Electricity a. Conversion of alternating to unidirectional current. b. Reversal of current direction. 5. Law Reduction of a penalty to a less severe one. [Middle English commutacioun, from Latin commūtātiō, commūtātiōn-, from commūtātus, past participle of commūtāre, to alter, exchange; see COMMUTE.] |
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