τετράγωνον
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
Russian (Dvoretsky)
τετράγωνον: (ᾰ) τό1) мат. четырехугольник или квадрат Plat.;
2) воен. четырехугольный строй, каре Xen.
