alteration

noun

1.
an event that occurs when something passes from one state or phase to another
change modification
Derived from:
alter
2.
the act of making something different (as e.g. the size of a garment)
afterclap awendedness besunderledge offwrixling adjustment modification
Derived from:
alter
3.
the act of revising or altering (involving reconsideration and modification)
revision