9 letters · 12 points in Scrabble
noun a negotiation to resolve differences that is conducted by some impartial party
noun the act of intervening for the purpose of bringing about a settlement
originFrom Middle English mediacion, mediacioun, medyacion, medyacyoun from Middle French mediacion and its etymon Late Latin mediātiō, from mediārī (“intervene”), from Latin medius (“middle”). By surface analysis, mediate + -ion.
Etymology from Wiktionary, CC BY-SA 3.0