/ Dictionary / Index M mediator: Meaning and Definition of Find definitions for: me•di•a•tor Pronunciation: (mē'dē-ā"tur), [key] — n. a person who mediates, esp. between parties at variance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mediator (Thesaurus) mediatize mediatorial Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language