Θαλασσίς No short definition found for Θαλασσίς Found Θαλασσίς 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 Θαλασσίς Θαλασσίς No checked forms of Θαλασσίς in the morphology database.