ἀντιστροφή

A. a turning about:

I. in choruses and dances, strophic correspondence, D.H. Comp. 25; in later writers, = ἀντίστροφος, ἡ (q.v.), Sch.Ar. Nu. 595,al.

II. Rhet., repetition of closing words in successive members, Phld. Rh. 1.195 S., Hermog. Id. 1.12, cf, 2.1, Eust. 945.60; ἀ. τὸ ἐναντίον τῆς ἐπαναφορᾶς Alex. Fig. 2.4.

2. inversion, of construction, e.g. ἠχῶν ἔπεσα for πεσὼν ἤχησα Phoeb. Fig. 1.5.

3. Gramm., inversion of letters (e.g. ἀκήν, ἦκα), EM 424.8.

III. inversion, κατὰ τὴν ἀ. τῆς ἀναλογίας in inverse ratio, Arist. Ph. 266b18:—in Logic, conversion of terms of a proposition, Id. APr. 25a40; ἀ. δέχεσθαι to be convertible, ib.50b32.

b. Math., τῶν θεωρημάτων ἡ ἀ. Procl. in Euc. p.251 F., cf. Apollon.Perg. Con. 2.49; ἀ. προηγουμένη complete conversion, Procl. in Euc. p.253F.; ἀ. ἀξιωμάτων Stoic. 2.64; generally, κατ’ ‐φήν conversely, Metrod. Herc. 831.14.

2. retortion of an argument, Arist. APr. 61a22.

3. change of a proposition into its opposite, ib.38a3,39a28.