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conversĭo, ōnis, f. [converto], a turning round, revolving, revolution (class.). 
- I.  Lit. 
- A.  In gen.: caeli, Cic. Div. 2, 42, 89; id. Univ. 6 med.; id. Rep. 6, 18, 18: astrorum omnesque motus, id. Tusc. 1, 25, 62; cf. id. N. D. 2, 19, 49: caelestes, id. Leg. 1, 8, 24.
 Hence,
- 2.  The periodical return of the seasons, caused by the revolution of the heavenly bodies: mensium annorumque, Cic. Univ. 14 fin.
- B.  Esp., in medic. lang., 
- a.  A turning round, inverting: vesicae, Plin. 8, 42, 67, § 166.
 In plur.: vulvae, Plin. 24, 7, 23, § 39.
- b.  An abscess, Col. 6, 17, 6.
- II.  Trop. 
- A.  In gen., subversion, alteration, change: conversio et perturbatio rerum, Cic. Fl. 37, 94; cf. id. Div. 2, 2, 6: moderatio et conversio tempestatum, id. Fl. 13, 31 fin.
- B.  Esp., in rhet., 
- 1.  The change or transfer from one species of composition to another, Quint. 10, 5, 4.
- 2.  The repetition of the same word at the end of a clause, ἀντιστροφή or ἐπιφορά, Cic. de Or. 3, 54, 207; Quint. 9, 1, 33 sq.; Auct. Her. 4, 13, 19 med.
- 3.  The rounding of a period, καμπή, συστροφή: sic enim has orationis conversiones Graeci nominant, Cic. de Or. 3, 48, 186: ut (oratio) conversiones habeat absolutas, id. ib. 3, 49, 190.
- C.  A moral change, conversion (late Lat.), Alcim. Avit. 6, 49; esp. with ad: ad verum Deum, Aug. Civ. Dei, 7, 33: ad unum verum Deum sanctumque, id. ib. 8, 24, 2.
- D.  A change of view or opinion: tanta conversio consecuta est, Plin. Ep. 9, 13, 18.