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