symposiarch

/sɪmˈpoʊziˌɑrk/
noun
  1. The person who presides over or organizes a symposium, banquet, or drinking party, especially in ancient Greece.
    • As symposiarch, she made sure the evening's discussion stayed lively and respectful.
    • In ancient Athens, the symposiarch decided how much wine to mix with water.
    • The modern conference symposiarch welcomed all the speakers and introduced the first topic.
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