ἑβδόμειος
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
A worshipped on the seventh day, epith. of Apollo, IG2.1653.
German (Pape)
[Seite 699] ὁ, Beiname des Apollo, Inscr. I p. 463; s. ἑβδομαγέτης.