/ Dictionary / Index M meliorism: Meaning and Definition of Find definitions for: mel•io•rism Pronunciation: (mēl'yu-riz"um, mē'lē-u-), [key] — n. the doctrine that the world tends to become better or may be made better by human effort. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meliorism (Thesaurus) melioration meliority Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language