A.coming, E.Tr.396 (prob.l.); “οὐ πτύσις ἀλλ᾽ ἀναγωγὴ καλέεται, τῆς ἄνω ἴξιος [τῆς ὁδοῦ] τοὔνομα ἔχουσα” Aret. SA2.2; “οἶνος ὠκὺς ἐς τὴν ἄνω ἴξιν” Id.CA2.4.
2. passage through, οὐδαμῆ . . κατὰ τὴν τοῦ θώρηκος ἴ. Hp.Acut.15 (but perh. simply, 'at no point in the θ.'); ἵξιν παρέχεσθαι allow free passage, dub. in Sch. Epicur.Ep.1p.8U. (fort. εἶξιν).
II. direction, straight line, esp. vertical line, καθημένῳ πόδες ἐς τὴν ἄνω ἴ. κατ᾽ ἰθὺ γούνασι his feet when he is seated should be vortically opposite his knees, Hp.Off.3; ἐπιδεῖν δεξιὰ ἐπ᾽ ἀριστερά, ἀριστερὰ ἐπὶ δεξιά, πλὴν κεφαλῆς: ταύτην δὲ κατ᾽ ἴξιν vertically, ib.9; βάλλεσθαι χρὴ τὸ ὀθόνιον κατ᾽ αὐτὴν τὴν ἴ. τοῦ ἕλκεος directly over the wound, Id.Fract.26; τοὺς νάρθηκας . . μὴ κατὰ τὴν ἴ. τοῦ ἕλκεος προστιθέναι ibid.; ὁκόσα κοινωνεῖ τοῖσι τῆς κνήμης ὀστέοισι καὶ αὐτέῃ τῇ ἴξει ib.9 codd. (“κατὰ τὴν ἴξιν” Gal.18(2).423; κατ᾽ αὐτὴν τὴν ἴ. Ermerins).
2. κατ᾽ ἴξιν c. gen., corresponding to, on the same side as, ἤλγησεν κατὰ βουβῶνα, σπληνὸς κατ᾽ ἴ., i.e. on the spleen or left side of the body, Hp.Epid.1.26.γ́, cf. 4.35,37, Art.33, Fract.16, 18, Mul.1.17; τῶν ὀδόντων τῶν τε ἄνω καὶ τῶν κάτω κατ᾽ ἴ. Id.Art.31; = ex ipsa parte, Cass.Fel.37; ἐν πυρετοῖσι ἀπὸ σπληνὸς καὶ ἥπατος διὰ ῥινῶν αἱμορραγέουσι, κατ᾽ ἴ. τοῦ σπλάγχνου τοῦ μυκτῆρος ῥέοντος the nostril corresponding to the organ in question, Aret.SA 2.2; ἡ κατ᾽ ἴ. κληίς the corresponding (i.e. liver or right side) collarbone, ib.2.7, cf. CA1.10; κατὰ τὴν ὄπισθεν ἴ. at the back of the leg, Hp.Art.60.