amelioration

noun

Etymology: From Middle English amelioracioun, from Middle French amelioracion and probably partly ameliorate + -ion.

1. The act of making better.

   “The tumult was over, and all things returned to their old place; and the abuse remained without remedy, and the wrong without redress. Ah! if the doctrine of amelioration be true, what a mighty debt does the future owe to the past!”

2. An improvement.
3. The process by which a term gains a more positive connotation over time.
4. An ameliorative change of a concept or a repertoire of concepts.

   “pre-amelioration”

   “post-amelioration”