DictionaryRoot: mediare
Latin
mediare
to be in the middle
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noun
mediation
mee-dee-AY-shuhn/ˌmiːdiˈeɪʃn/
The action of an intervening agent connecting separate sides.
Etymology
From an action of halving or being in the middle, mediation came to mean acting as an intermediary. In a dispute, that middle role is intervention between the opposing sides.