alteration (
http://definr.com/alteration)
n 1: an event that occurs when something passes from one state or
phase to another: "the change was intended to increase
sales"; "this storm is certainly a change for the worse"
[syn:
change,
modification]
2: the act of making something different (as e.g. the size of a
garment) [syn:
modification,
adjustment]
3: the act of revising or altering (involving reconsideration
and modification); "it would require a drastic revision of
his opinion" [syn:
revision]