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出典:Wiktionary
From Ancient Greek ποταμογείτων (potamogeítōn), from ποταμός (potamós, “river”) + γείτων (geítōn, “neighbour”).
Third declension.
| Case | Singular | Plural |
|---|---|---|
| nominative | potamogēton | potamogētōnēs |
| genitive | potamogētōnis | potamogētōnum |
| dative | potamogētōnī | potamogētōnibus |
| accusative | potamogētōnem | potamogētōnēs |
| ablative | potamogētōne | potamogētōnibus |
| vocative | potamogēton | potamogētōnēs |