melioration
音標[,mi:ljә'reiʃәn]中文翻譯：
n. 改善
英文解釋：
名詞 melioration:
- the act of relieving ills and changing for the better同義詞：amelioration, betterment
- a condition superior to an earlier condition同義詞：improvement
- the linguistic process in which over a period of time a word grows more positive in connotation or more elevated in meaning