νεῦσις · neusis — LSJ
inclination, tendency of physical forces to or from a centre, Ti.Locr. 100d.
νεύσεις, αἱ, title of work by Apollonius of Perga, problems where a straight line has to be drawn through a point so as to intercept a given length between two lines or curves, Papp. 670.4.
downward tendency, gravitation, Plu. Col. 2.1122c, prob. in Alex.Aphr. Pr. 1.131.
tendency, inclination, Plot. 1.1.12.
in Neo-Platonic philosophy, declension in the scale of Being, esp. of the Soul, ν. ἡ πρὸς σῶμα καὶ ὕλην Id. 1.6.5; ν. εἰς or πρὸς τὴν γένεσιν, Hierocl. in CA 26p.479M., Porph. Antr. 11; ἡ πρὸς τὸ χεῖρον ν. Jul. Or. 5.166d.