διπλήσιον
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
Russian (Dvoretsky)
διπλάσιον: ион. διπλήσιον τό двойное количество, двойная сумма Her., Arst., Theocr.