Ποσίδειος No short definition found for Ποσίδειος Found Ποσίδειος with different capitalization. Morpho works with a static database. If you like, you can compare the output of Morpheus.No parse information found. Search for this form in Logeion: of Ποσίδειος Ποσίδειος No checked forms of Ποσίδειος in the morphology database.