The action of changing or modifying something; a change made to something, typically a minor adjustment or modification.
From Latin alterare meaning 'to make other or different,' from alter (other). The word entered English through Old French, maintaining its basic meaning of making something different from its original state.
Alteration comes from 'alter,' meaning 'other' - so when you alter something, you make it into the 'other' version of itself, like having clothes altered to fit differently!
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