Permutation - Definition

n 1: an event in which one thing is substituted for another;
"the replacement of lost blood by a transfusion of donor
blood" [syn: substitution, permutation,
transposition, replacement, switch]
2: the act of changing the arrangement of a given number of
elements
3: complete change in character or condition; "the
permutations...taking place in the physical world"- Henry
Miller
4: act of changing the lineal order of objects in a group