 Etymologicum Genuinum

The Etymologicum Genuinum (standard abbreviation E Gen) is the conventional modern title given to a lexical encyclopedia compiled at Constantinople in the mid-ninth century.The anonymous compiler drew on the works of numerous earlier lexicographers and scholiasts, both ancient and recent, including Aelius Herodianus, Georgius Choeroboscus, Saint Methodius, Orion of Thebes, Oros of Alexandria and Theognostus the Grammarian.