διορθωτής
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
English (LSJ)
οῦ, ὁ,
A a corrector, τῶν σοφῶν LXX Wi.7.15; τῆς πολιτείας Plu.Sol.16; = Lat. corrector civitatium, Arr.Epict.3.7.1. 2 esp. of books, editor, reviser, D.S.15.6, Gal.8.758.