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1580s, "account of a gathering or party," from Latin symposium "drinking party, symposium," from Greek symposion "convivial gathering of the educated" (related to sympotes "drinking companion"), from syn- "together" (see syn-) + posis "a drinking," from a stem of Aeolic ponen "to drink," cognate with Latin potare "to drink" (see potion). The sense of "meeting on some subject" is from 1784. Reflecting the Greek fondness for mixing wine and intellectual discussion, the modern sense is especially from the word being used as a title for one of Plato's dialogues. Greek plural is symposia, and the leader of one is a symposiarch (c.1600 in English).