Pĕr'-mu-tā'-tion, n.

n. [Lat. permutatio, Fr. permutation, Pr. permutatio, Sp. permutacion, It. permutazione.]

1. The act of permuting; exchange of one thing for another; mutual transference; radical change. “The intolerable distresses brought upon them by the violent convulsions and permutations that have been made in property.” Burke.
2. (Math.) The arrangement of any determinate number of things or letters, in all possible orders, one after the other. Brande.