παράλλαξις

A. alternation : overlapping of broken bones, Hp. Fract. 15 (pl.); ἡ π. τοῦ ὀστέου ib.35 ; π. ἔχειν πρὸς ἄλληλα καὶ συμπλοκήν Thphr. Sens. 66.

2. alternating motion, τῶν σκελῶν Plu. Phil. 6 ; ἡ δεῦρο κἀκεῖ π. τῆς κεφαλῆς Id. 2.977b.

II. change, deviation, mutation, Pl. Ti. 22d, cf. Plt. 269e, Placit. 1.7.33 (pl.); διαστροφὴ μεγάλη καὶ π. τῆς γωνίας Plu. 2.93 oa ; παραλλάξιες φρενῶν mental aberrations, Hp. Acut.(Sp.)1.

III. change of position, τῶν γωνιῶν Arist. Cael. 287a18 ; ἡ τοῦ ἡλίου π. D.C. 76.13.

2. Astron., parallax, Ptol. Alm. 5.11, 9.1, Procl. Hyp. 4.53, al.

b. φάσις defined as ἡ μετὰ τὴν κρύψιν τοῦ ἡλίου πρώτη . . ἐξ αὐτοῦ π. Phlp. in Mete. 76.30.