Dictionary
a•mel•io•ra•tion
Pronunciation: (u-mēl"yu-rā'shun, u-mē'lē-u-), [key]—
n.
1. an act or instance of ameliorating; the state of being ameliorated.
2. something that ameliorates; an improvement.
3. melioration (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.