ἀρχιγέρων
From LSJ
ἀγεωμέτρητος μηδεὶς εἰσίτω → no one ignorant of geometry may enter, let no one ignorant of geometry enter, let no one ignorant of geometry come in
English (LSJ)
οντος, ὁ,
A chief of a γερουσία, Sammelb.2100 (i B.C.), Cod.Just.1.4.5.
Greek (Liddell-Scott)
ἀρχιγέρων: -οντος, ὁ ὁ πρῶτος τῶν γερόντων, πρόεδρος τῆς γερουσίας, Βυζ.