mediator

noun

me·​di·​a·​tor ˈmē-dē-ˌā-tər How to pronounce mediator (audio)
1
: one that mediates
especially : one that mediates between parties at variance
2
: a mediating agent in a physical, chemical, or biological process

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
South Africa has adopted a neutral position in the war and has attempted to act as a mediator between the sides, although with limited success. Compiled By Democrat-Gazette Staff From Wire Reports, arkansasonline.com, 7 Mar. 2025 Egyptian security officials told Reuters on Thursday that Egyptian and Qatari mediators attended talks between the Trump envoy and Hamas. U.S. hostage affairs envoy Adam Boehler has the authority to talk directly with Hamas, the White House said when asked about the discussions. Nidal Al-Mughrabi, USA TODAY, 6 Mar. 2025 First, mediator Steve Charbonneau asked if Burke had an update on her plans for the building. Matthew Geiger, The Denver Post, 5 Mar. 2025 And in any peace talks, a mediator tries to create the impression of neutrality. Thomas G. Moukawsher, Newsweek, 4 Mar. 2025 See All Example Sentences for mediator

Word History

First Known Use

14th century, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Mediator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mediator. Accessed 13 Mar. 2025.

Kids Definition

mediator

noun
me·​di·​a·​tor ˈmēd-ē-ˌāt-ər How to pronounce mediator (audio)
: one that mediates
mediatory
-ē-ə-ˌtōr-ē
-ˌtȯr-
adjective

Medical Definition

mediator

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

Legal Definition

mediator

noun
me·​di·​a·​tor ˈmē-dē-ˌā-tər How to pronounce mediator (audio)
: one that works to effect reconciliation, settlement, or compromise between parties at variance compare arbitrator

More from Merriam-Webster on mediator

Last Updated: - Updated example sentences
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