being between the two extremes; middle; interposed; intervening; intermediate.-acting by means, or by an intervening cause or instrument; not direct or immediate; acting or suffering through an intervening agent or condition.-gained or effected by a medium or condition.-to be in the middle, or between two; to intervene.-to interpose between parties, as the equal friend of each, esp. for the purpose of effecting a reconciliation or agreement; as, to mediate between nations.-to effect by mediation or interposition; to bring about as a mediator, instrument, or means; as, to mediate a peace.-to divide into two equal parts.