ἐγώ εἰμι τὸ ἄλφα καὶ τὸ ὦ, ὁ πρῶτος καὶ ὁ ἔσχατος, ἡ ἀρχὴ καὶ τὸ τέλος → I am the Alpha and the Omega, the first and the last, the beginning and the end
-ου, τό
abortivo καὶ τὸ φάρμακον δὲ τὸ αἴτιον τοῦ ἐξαμβλοῦν τὰς γυναῖκας ἀ. καλεῖται Sch.Ar.Nu.137.