Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

1. ĭō, interj. [ἰώ], expressing joy,

  1. I. ho! huzza! hurra! io hymen hymenaee, io hymen, Plaut. Cas. 4, 3, 3; id. Ps. 2, 4, 11: miles, io, magna voce, triumphe, canet, Tib. 2, 5, 121 (118): io triumphe! Hor. C. 4, 2, 49: io, io, liber ad te venio, Plin. Ep. 3, 9.
  2. II. Expressing pain, oh! ah! io! enicas me miserum, Plaut. Truc. 1, 2, 21: uror, io, remove saeva puella faces! Tib. 2, 4, 6.
  3. III. Used in a sudden or vehement call, holla! look! quick! io! matres, audite, Verg. A. 7, 400: io! comites, his retia tendite silvis, Ov. M. 4, 513; id. A. A. 3, 742.

2. Īō, Iūs, and Īōn, Iōnis, f., = Ἰώ, a daughter of Inachus, king of Argos, beloved by Jupiter, and changed, through fear of Juno, into a cow; afterwards worshipped as an Egyptian deity, under the name of Isis.
Form Io, Ov. H. 14, 85; Prop. 2, 28 (3, 24), 17; Ov. M. 1, 588 sq.; Val. Fl. 4, 351 sq.; Hyg. Fab. 145.
Gen. Ius, Nemes. Cyn. 31.
Acc. Io, Ov. M. 1, 588; Amm. 2, 19, 29.
Abl. Io, Prop. 2, 13, 19.
Form Ion; dat. Ioni, Plaut. Aul. 3, 6, 20.
Acc. Ionem, Serv. Verg. A. 3, 153.