A.not wandering, steady, fixed, Pl.Plt.288a, al.: c. gen., ἀπλανὲς ἀπηργάσατο ἐκείνων [κινήσεων] made it free from their influence, Id.Ti.34a.
2. Astron. of stars,fixed, opp.planets, ib. 40b, cf.Arist.Mete.343b9, Metaph.1073b10, Arat.461, AP9.25 (Leon.); “ἡ ἀ. σφαῖρα” Corp.Herm.2.6.
II. of a line, straight, AP6.65 (Paul. Sil.).
III. unwavering, “θεωρία” Epicur.Ep.3p.62U.
2. not erring, S.E.M7.195, Longin.2.2 (Sup.), etc. Adv. “-νῶς” without going astray, Max.Tyr.5.2; accurately, Alciphr.3.59.