- any radical alteration; total transformation
- a complete rearrangement, esp. by interchanging
- Math. any of the total number of groupings, or subsets, into which a group, or set, of elements can be arranged in a particular order: the permutations of A, B, and C taken two at a time are AB, BA, AC, CA, BC, CB

Origin of permutation

Middle English*permutacion*from Middle French from Classical Latin

*permutatio*from

*permutare:*see permute