amelioration

n. improvement, renovation, betterment

Amelioration may refer to one of the following.Amelioration (health) means "to make better" or "to improve upon" most often in context of or in reference to ill health of a person but could also be in reference to healing the land, plant, tree, etc.Land amelioration (land improvement)Amelioration (semantic) is a form of semantic change, the introduction of positive connotations or removal of negative ones for a word or expression.
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Noun
1. the act of relieving ills and changing for the better
(synonym) melioration, betterment
(hypernym) improvement
(derivation) better, improve, amend, ameliorate, meliorate

n. improvement, amelioration; betterment, mending, upswing, refinement, rally, upturn; enhancement (Computers)

(n.)
The act of ameliorating, or the state of being ameliorated; making or becoming better; improvement; melioration.