An example of a commutation is ordering French fries instead of whatever potato is listed as coming with the meal.
An example of a commutation is a change in the sentence of a prisoner from death to life in prison without parole.
Origin of commutation
- Middle English commutacioun from Latin commūtātiō commūtātiōn- from commūtātus past participle of commūtāre to alter, exchange commute
From American Heritage Dictionary of the English Language, 5th Edition