διαγνώστης
From LSJ
εὖτ' ἂν ὑπὸ τοῦ κακοῦ κτεινέωνται → when the disease is proceeding towards a fatal termination
English (LSJ)
ου, ὁ, examining magistrate, = Lat. cognitor, Gloss.
Spanish (DGE)
-ου, ὁ magistrado encargado de examinar las sentencias, Gloss.2.270.