mediator

noun me·di·a·tor \ ˈmē-dē-ˌā-tər \
Updated on: 16 May 2018

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

Examples of mediator in a Sentence

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

Recent Examples of mediator from the Web

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.

First Known Use of mediator

14th century

in the meaning defined at sense 1

See Words from the same year
NEW! Time Traveler

Medical Dictionary

mediator

noun 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

Law Dictionary

mediator

noun 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


Seen and Heard

What made you want to look up mediator? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to coax or persuade

Get Word of the Day daily email!

Test Your Vocabulary

May 2018 Words of the Day Quiz

  • spring-flowers
  • Which is a synonym of raillery?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!