ὁμαλιστέον
From LSJ
τούτου δὲ συμβαίνοντος ἀναγκαῖον γίγνεσθαι πάροδον καὶ τροπὰς τῶν ἐνδεδεμένων ἄστρων → but if this were so, there would have to be passings and turnings of the fixed stars
English (LSJ)
one must level, Gp.18.2.1.
Greek (Liddell-Scott)
ὁμαλιστέον: ῥηματ. ἐπίθετ. τοῦ ὁμαλίζω, δεῖ ὁμαλίζειν, Γεωπον. 18, 2.