LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

Iovius

Iovius (feminine Iovia, neuter Iovium)
Classical[ˈjɔ.wi.ʊs]Ecclesiastical[ˈjɔː.vi.us]

Meaning

  1. adjectiveJovian, of or pertaining to Jupiter
  2. adjectiveDiocletianic, of or pertaining to Diocletian

Declension

singular
formmasculinefeminineneuter
nominativeIoviusIoviaIovium
genitiveIoviīIoviaeIoviī
dativeIoviōIoviaeIoviō
accusativeIoviumIoviamIovium
ablativeIoviōIoviāIoviō
vocativeIovieIoviaIovium
plural
formmasculinefeminineneuter
nominativeIoviīIoviaeIovia
genitiveIoviōrumIoviārumIoviōrum
dativeIoviīsIoviīsIoviīs
accusativeIoviōsIoviāsIovia
ablativeIoviīsIoviīsIoviīs
vocativeIoviīIoviaeIovia

Jŏvĭus, a, um, adj. Jovis,
I. of or belonging to Jupiter: nomen, Arn. 6, 194.
Jŏvĭus, ii, m.,
I. a surname of the emperor Diocletian.—
II. Derivv.
A. Jŏ-vĭus, a, um, adj., of or belonging to Diocletian: cohors, a legion of honor instituted by Diocletian, Claud. B. Gild. 418.—
B. Jŏ-vĭānus, a, um, adj., the same; hence, subst.: Jŏvĭāni, soldiers of Diocletian's legion of honor, Amm. 22, 3, 2 al.

Origins

From Iov- (“oblique stem of Iuppiter”) + -ius.

In the Academy Smith's classical dictionaries

Biography & mythologyJoviusJovius. a bold and faithless intriguer, was Praefectus Praetorio of Illyricum, under the emperor Honorius, and was promoted to that office by Stilicho…

Quick answers

What does Iovius mean in Latin?
Iovius, a adjective, means “Jovian, of or pertaining to Jupiter; Diocletianic, of or pertaining to Diocletian”.
How do you pronounce Iovius?
In classical Latin, [ˈjɔ.wi.ʊs]; in ecclesiastical (church) Latin, [ˈjɔː.vi.us].