ἐννεασύλλαβος
From LSJ
διαφέρει δὲ ἡ κωμῳδία τῆς τραγῳδίας, ὅτι ἡ μὲν κωμῳδία ἀπὸ γέλωτος εἰς γέλωτα καταλήγει, ἡ δὲ τραγῳδία ἀπὸ θρήνου εἰς θρῆνον → comedy is different from tragedy, because comedy tapers off from laughter into laughter, but tragedy from lament into lament
English (LSJ)
ον,
A nine-syllabled, Steph.in Rh.321.16, AP13.19 tit.: -σύλλαβον (sc. μέτρον), τό, Σαπφικόν Heph.10.2.
German (Pape)
[Seite 847] neunsylbig, Gramm.