1. The act or process of making something better; improvement
The amelioration of working conditions was a key demand of the labor union.
A melhoria das condições de trabalho era uma exigência fundamental do sindicato.
2. A change that results in improvement or a better state
The new policies led to a significant amelioration in student performance.
As novas políticas levaram a uma melhoria significativa no desempenho dos alunos.
3. In linguistics, the process by which a word's meaning becomes more positive over time
The word 'nice' underwent amelioration from its original meaning of 'foolish'.
A palavra 'nice' sofreu uma melhoria semântica a partir de seu significado original de 'tolo'.