Emily Dickinson Lexicon

PER-MU-TA'TION, n. [L. permutatio, permuto; per and muto, to change.]

1. In commerce, exchange of one thing for another; barter. – Bacon.
2. In the canon law, the exchange of one benefice for another. – Encyc.
3. In algebra, change or different combination of any number of quantities. – Wallis.