moderator
noun(mod-er-a-tor)
any substance used to slow down neutrons in nuclear reactors
moderator
noun(mod-er-a-tor)
in the Presbyterian church, the officer who presides over a synod or general assembly
moderator
noun(mod-er-a-tor)
someone who mediates disputes and attempts to avoid violence
moderator
noun(mod-er-a-tor)
someone who presides over a forum or debate