ἀποχωριστέον
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
A one must separate, remove, Gp.16.1.5.
Greek (Liddell-Scott)
ἀποχωριστέον: ῥηματ. ἐπίθ., πρέπει τις να ἀποχωρίσῃ, Γεωπ. 16.1, 5: - Οὐσιαστ. -ιστής, ὁ, ὁ ἀποχωρίζων, Γλωσσ.: - Ἐπίθ. -τικός, ή, όν, ὁ ἀποχωρίζων, Γρηγ. Νύσσ.