Stephanos of Byzantium - Ethnika
Oa: a deme in Attike, of the Pandionis tribe. Dionysios son of Tryphon says that their plural is called 'Oeis', as are many other things. The deme-member, however, is called 'Oathen': 'Damon son of Damonides, Oathen'. The same is used also from the place. The other forms are 'Oaze', 'Oasi'. It is also called 'Oe'. There is also Oe, of the Oineis tribe. The deme-member is 'Oethen'.
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.
Ὄα, δῆμος τῆς Ἀττικῆς, τῆς Πανδιονίδος φυλῆς. Διονύσιος δὲ ὁ τοῦ Τρύφωνός φησι τὸ πληθυντικὸν Ὄεις λέγεσθαι αὐτάς, ὡς καὶ ἄλλα πολλά. ὁ μέντοι δημότης Ὄαθεν λέγεται “Δάμων Δαμωνίδου Ὄαθεν”. καὶ ἐκ τόπου τὸ αὐτό. τὰ δ´ ἄλλα Ὄαζε Ὄασι. λέγεται καὶ Ὄη. ἔστι δ´ Ὄη τῆς…
…ι Μένιππος, ἀπὸ Σινώπης εἰς Εὔαρχον ποταμόν, ὃς ὁρίζει Παφλαγονίαν καὶ Καππαδοκίαν. σεσημείωται τὸ ἀνθρακιά ὀξυνόμενον. Τὰ διὰ τοῦ 'οα' σπάνια καὶ κατὰ πάθος γενόμενα παρ´ Ἀττικοῖς παροξύνεται, οἴα ὄα τὸ δέρμα· ἔστι καὶ δῆμος τῆς Ἀττικῆς τῆς Πανδιονίδος φυλῆς Ὄα. Διονύσιος δὲ ὁ Τρύφωνός φησι πληθυντικῶς Ὀεῖς λέγεσθαι ἀπὸ τοῦ Ὀεὺς ὡς ἄλλα πολλά. χροία χρόα. ποία πόα. Γενόα πόλις τῶν Λιγύρων τῆς Ἰταλίας, καλουμένη νῦν Ἰάνουα, ὡς Ἀρτεμίδωρος. Θεισόα πόλις Ἀρκαδίας. Λυκόα πόλις …