μεγαλόπτολις
From LSJ
πάντα χωρεῖ καὶ οὐδὲν μένει καὶ δὶς ἐς τὸν αὐτὸν ποταμὸν οὐκ ἂν ἐμβαίης → all things move and nothing remains still, and you cannot step twice into the same stream
German (Pape)
[Seite 107] = μεγαλόπολις; μεγαλοπτόλιες Ἀθᾶναι Pind. P. 7, 1; δῆμος Ep. ad. 497 (App. 214).
Greek (Liddell-Scott)
μεγᾰλόπτολις: ἴδε ἐν λέξ. μεγαλόπολις.
