Lewis & Short

Ēlectra, ae (nom. with long a, Prop. 2, 14, 5 (3, 6, 5 M.); Ov. F. 4, 177; Cic. Arat. 36; acc.: Electrān, Ov. Tr. 2, 395; id. F. 4, 32; 174), f., = Ἠλέκτρα.

  1. I. Daughter of Atlas and Pleione, one of the seven Pleiades, and mother of Dardanus by Jupiter, Ov. F. 4, 31 sq.; 174; Verg. A. 8, 135; Serv. ib. 7, 207; 10, 272; Hyg. Fab. 155 and 192.
    Hence, Ēlectrĭus, a, um, adj.: tellus, i. e. Samothrace, Val. Fl. 2, 431.
  2. II. Daughter of Agamemnon and Clytemnestra, and sister of Orestes, Prop. 2, 14, 5 (3, 6, 5 M.); Hor. S. 2, 3, 140; Vell. 1, 1, 3; Juv. 8, 218; Hyg. Fab. 117; 122; Serv. Verg. A. 4, 471.
    Also the name of a tragedy, Ov. Tr. 2, 395; Suet. Caes. 84.
  3. III. A Danaïd, Hyg. Fab. 170.
  4. IV. An Oceanid, wife of Thaumas, and mother of the Harpies, Serv. Verg. A. 3, 212; 241.