permutation
n. US //ˌpɝmjuˈteɪʃən// UK //pˌɜːmjuːtˈeɪʃən// per·mu·ta·tion
From Middle English permutacioun, permutacyoun, from Old French permutacïon, promutatïon and Medieval Latin permūtātiōnem, accusative of permūtātiō. Morphologically permute + -ation.