The story
- Medieval Latin · derived frompermūtātiōnem
- Old French · derived frompermutacïon
- Middle English · inherited frompermutacioun
- English todaypermutation
From Middle English permutacioun, permutacyoun, from Old French permutacïon, promutatïon and Medieval Latin permūtātiōnem, accusative of permūtātiō. Morphologically permute + -ation.
Etymology from Wiktionary, CC BY-SA 4.0.