# mediator

> English word · Noun · IPA /ˈmidieɪtɚ/ · frequency rank #19,900

## Definitions
1. One who negotiates between parties seeking mutual agreement.
2. A chemical substance transmitting information to a targeted cell.

## Etymology
From Middle English mediatour, mediatoure, mediatur, medyatour, from Middle French mediateur, mediatur or its etymon Latin mediātor (“one who mediates”), from mediātum, supine of mediō (“be in the middle”), from medius (“middle”). By surface analysis, mediate + -or.

## Easily confused with
- **mediate** (https://plainspell.com/en/vs/mediate-vs-mediator)
- **mediation** (https://plainspell.com/en/vs/mediation-vs-mediator)

## Common misspellings (11)
`emdiator`, `mdeiator`, `medaitor`, `meddiator`, `mediaotr`, `mediatorr`, `mediatro`, `mediattor`, `meditaor`, `meidator`, `mmediator`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/mediator