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Noun: moderator  'mó-du,rey-tu(r)
  1. Any substance used to slow down neutrons in nuclear reactors
  2. In the Presbyterian church, the officer who presides over a synod or general assembly
  3. Someone who presides over a forum or debate
  4. Someone who mediates disputes and attempts to avoid violence

Derived forms: moderators

Type of: go-between, inhibitor, intercessor, intermediary, intermediate, intermediator, mediator, presiding officer

Part of: nuclear reactor, reactor

Encyclopedia: Moderator