me·​di·​a·​tor | \ ˈmē-dē-ˌā-tər How to pronounce mediator (audio) \

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 The law journal, in fact, also posed a different kind of challenge for Mr. Williams, drawing on his skills as a mediator and emerging leader. New York Times, 7 Oct. 2021 In that way, the mediator will have a relationship with the parties and their counsel early on. Mark Buckstein,, 9 Sep. 2021 On Tuesday, former Nigerian President Goodluck Jonathan headed to Bamako as the regional body's mediator. Arkansas Online, 9 Sep. 2021 Contract negotiations began in January, and were so difficult that a federal mediator was brought in to help bring the two sides together. Rafael Guerrero,, 8 Sep. 2021 An Orange County judge dismissed dueling lawsuits between Luma and BFC Park Avenue, LLC, after both parties reached a settlement through a mediator. Lisa Maria Garza,, 19 Aug. 2021 In 2017, a federal mediator was appointed to help negotiate a settlement. Bob Sandrick, cleveland, 18 Aug. 2021 Peterman is exclusively available as a trainer and conflict consultant through BreakthroughADR and exclusively available as a mediator and arbitrator through JAMS. Pauleanna Reid, Forbes, 24 Sep. 2021 The mediator or arbitrator seeks to resolve the difference by finding a middle ground., 2 Sep. 2021

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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Time Traveler for mediator

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

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Last Updated

19 Oct 2021

Cite this Entry

“Mediator.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2021.

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me·​di·​a·​tor | \ ˈmēd-ē-ˌāt-ər How to pronounce mediator (audio) \

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 How to pronounce mediator (audio) \

Legal Definition of mediator

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

More from Merriam-Webster on mediator

Nglish: Translation of mediator for Spanish Speakers

Britannica English: Translation of mediator for Arabic Speakers


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