per·mu·ta·tion 
(pûr′my-tāshən)
(pûr′my-tāshən)n.
1.
a. The process of altering the order of a given set of objects in a group.
b. The result of such a process; a rearrangement or recombination of elements: permutations of gene order.
c. Mathematics A rearrangement of the elements of a set.
2. A complete change; a transformation: the country's permutation into a modern democracy.
per′mu·tation·al adj.