Ἰστρίων Ἴστριος, of the Danube Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: proper-name adjective masculine genitive plural proper-name adjective feminine genitive plural proper-name adjective neuter genitive plural of Ἴστριος Ἴστριος No checked forms of Ἴστριος in the morphology database.