ἀλαβαρχία
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
English (LSJ)
[ᾰλ], ἡ
A office of ἀλαβάρχης, J.AJ20.7.3; also ἐξ ἀλαβαρχείης AP11.383 (Pall.).