#1
melioration n. [
amelioration, betterment] the act of relieving ills and changing for the better
. wn #2
melioration n. [
improvement] a condition superior to an earlier condition; "the new school represents a great improvement"
. wn #3
melioration n. the linguistic process in which over a period of time a word grows more positive in connotation or more elevated in meaning
. wn