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Moderator

ˈmɒdəreɪtə

Moderator definitions
noun
moderator moderators
  1. an arbitrator or mediator

    "Egypt managed to assert its role as a regional moderator"

    • a presiding officer, especially a person chairing a debate

      "the debates will each feature one moderator and a panel of three questioners"

    • a Presbyterian minister presiding over an ecclesiastical body

      "the newly elected Moderator of the Dutch Reformed Church"

  2. a person who monitors an online forum or social media platform to ensure that its users and content abide by the rules, especially by deleting inappropriate or offensive content and banning or suspending users
  3. a person who reviews examination papers to ensure consistency, or otherwise oversees an examination

    "after marking by the tutor, the papers are returned to a moderator"

  4. a substance used in a nuclear reactor to retard neutrons

    "in a fast reactor there is no moderator to slow the reaction down"