Lewis & Short

Dĭōnē, ēs (-a, ae, Cic. N. D. 3, 23, 59), f., = Διώνη.

  1. I. The mother of Venus, Cic. l. l.; Hyg. praef.; Claud. Rapt. Pros. 3, 433.
    Hence, Dĭōnæus, a, um, adj., of Dione: vestis, the garment worked by Dione for her daughter, Claud. Epith. Pall. et Cel. 102.
    Far more freq. as in Greek,
  2. II. Venus, Ov. F. 2, 461; 5, 309; id. Am. 1, 14, 33 al.
    Hence, Dĭōnæus, a, um, adj., of Dione (Venus): mater, Venus herself (with reference to Aeneas), Verg. A. 3, 19; hence, Dionaeus Caesar, as the descendant of Iulus, Aeneas, and consequently of Venus, id. E. 9, 47: columba, sacred to Venus, Stat. Silv. 3, 5, 80: flores, Col. 10, 286: antrum, Dione’s grotto, as the scene of love and love-songs, Hor. C. 2, 1, 39.