Breadcrumb Home > Dictionary Cite Meaning of melioration Find definitions for: mel•io•ra•tion Pronunciation: (mēl"yu-rā'shun, mē"lē-u-), [key] — n. semantic change in a word to a more approved or more respectable meaning. Cf.(def. 2). amelioration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: melioration (Thesaurus) meliorate meliorism Related Content Daily Word Quiz: sinecure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language