ὅρισμα
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
Ion. οὔρ-, ατος, τό, (ὁρίζω)
A boundary, limit, Hdt.2.17: and in pl., like ὅρια 1, Id.4.45, E.Hec.16; ὅ. βαρβάρων against them, Id.IA952 : prov., Μυσῶν καὶ Φρυγῶν ὁρίσματα, of matters which should be kept apart, Trag.Adesp.560.