ὄρεξις · orexis — LSJ
appetency, conation
general word for all kinds of appetency, conation, including ἐπιθυμία, θυμός, βούλησις, Arist. de An. 414b2, cf. 433a13, al., Stoic. 3.40, Epicur. Fr. 202, Metrod. Herc. 831.16, Phld. Mus. p.78 K. ; opp. φυγή, Arist. de An. 431a12 ; opp. ἔκκλισις, Arr. Epict. 1.4.1, M.Ant. 8.7.
1 longing, yearning after, desire for
c. gen. objecti, longing or yearning after a thing, desire for it, Democr. 219, Pl. Def. 414b, Arist. EN 1119b7, de An. 414b6, al.: more rarely, ὄ. ἐπί τι Plu. Aud. 2.48c ; περί τι Democr. 72.
2 propension, appetency
abs., propension, appetency, ὄ. βουλευτική Arist. EN 1113a11 ; ὄ. διανοητική ib. 1139b5 ; [ἐπιθυμίαι τινὲς] εὐδιάχυτον τὴν ὄ. ἔχουσιν Epicur. Sent. 26.