me·di·a·tor | \ ˈmē-dē-ˌā-tər \

Definition of mediator 

1 : one that mediates especially : one that mediates between parties at variance

2 : a mediating agent in a physical, chemical, or biological process

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Examples of mediator in a Sentence

if you two cannot resolve this argument on your own, we'll have to bring in a mediator

Recent Examples on the Web

Typically, the litigants split the mediator’s fee, which in Mr. Cohen’s case is about $500 an hour. Corinne Ramey, WSJ, "New York to Litigants: Let’s Settle Those Lawsuits," 4 July 2018 Palestinian President Mahmoud Abbas cut ties with the U.S., declaring it unfit to be the sole mediator for potential peace between Israel and Palestine. Ryan Gaydos, Fox News, "US Embassy move to Jerusalem 'national security priority,' Mnuchin says," 14 May 2018 Moon, who has been a mediator between Trump and Kim, called an emergency meeting in the middle of the night Thursday after Trump called off the June summit in a letter to Kim. James Griffiths, CNN, "South Korea's Moon: North Korea still committed to full denuclearization," 26 May 2018 The next bargaining session, with a federal mediator, is scheduled for July 17. Katie Johnston,, "Locked out, National Grid workers grapple with loss of income, health insurance," 11 July 2018 Class sizes average around four- to five-students to a teacher, or mediator. Mikaela Porter, Courant Community, "West Hartford Ben Bronz Academy Moves Into New Space Next To Northwest Catholic," 29 June 2018 For years, Hamas’ tight grip on Gaza vexed Mideast mediators. Washington Post, "Trump’s Mideast team gets close-up view of peace obstacles," 21 June 2018 Any dispute about how to monetize the assets will be referred to a mediator, according to the court documents., "Lynn Tilton Stripped of Role Leading Zohar Funds in Bankruptcy Deal," 1 May 2018 Sittenfeld and others have suggested Black and Cranley work with a mediator to resolve their differences. Cameron Knight,, "Sittenfeld, Young texts: Cincinnati city manager needs counseling; mayor is a liar," 18 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mediator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mediator

14th century, in the meaning defined at sense 1

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Last Updated

19 Sep 2018

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Time Traveler for mediator

The first known use of mediator was in the 14th century

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me·di·a·tor | \ ˈmēd-ē-ˌāt-ər \

Medical Definition of mediator 

: one that mediates especially : a mediating agent (as an enzyme or hormone) in a chemical or biological process substance P, a neuropeptide mediator of analgesic stimuli in peripheral sensory nerves —D. R. Robinson


me·di·a·tor | \ ˈmē-dē-ˌā-tər \

Legal Definition of mediator 

: one that works to effect reconciliation, settlement, or compromise between parties at variance — compare arbitrator

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