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1. One that mediates, especially one that reconciles differences between disputants.
2. Physiology A substance or structure that mediates a specific response in a bodily tissue.
3. Physics A subatomic particle that effects or conveys a force between subatomic particles.
me•di•a•tor(ˈmi diˌeɪ tər)
a person who mediates, esp. between parties at variance.
[1250–1300; Middle English (< Anglo-French) < Late Latin]
me`di•a•to′ri•al (-əˈtɔr i əl, -ˈtoʊr-) adj.
|Noun||1.||mediator - a negotiator who acts as a link between parties|
mediatrix - a woman who is a mediator
diplomat - a person who deals tactfully with others
marriage broker, matcher, matchmaker - someone who arranges (or tries to arrange) marriages for others
moderator - someone who mediates disputes and attempts to avoid violence
negotiant, negotiator, treater - someone who negotiates (confers with others in order to reach a settlement)
second hand - an intermediate person; used in the phrase `at second hand'; "he could learn at second hand from books"