/ Dictionary / Index M meliorate: Meaning and Definition of Find definitions for: mel•io•rate Pronunciation: (mēl'yu-rāt", mē'lē-u-), [key] — -rat•ed, -rat•ing. ameliorate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meliorate (Thesaurus) melioidosis melioration Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language