melioration

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

If the consolations of true religion are proffered, they are either spurned with anger, or merely produce an evanescent melioration.

But professional reformation or melioration is usually an organic, incremental process.

But the seeds from a young tree, having itself the tendency to melioration, are more likely to produce improved sorts.

There are certain meliorations against cruelty, which, if a nation should transgress, probably other nations might feel called upon to suppress.