What does Iōnās mean in Latin?

Iōnās, a proper noun, means “Jonah (Old Testament prophet); Jonah (Book of Jonah)”.

What is the genitive of Iōnās?

The genitive singular is Iōnae. Iōnās is masculine, first declension.

In classical Latin, [ˈjoː.naːs]; in ecclesiastical (church) Latin, [ˈjɔː.nas].

proper noun · masculinefirst declension

Iōnās m sg (genitive Iōnae)

Classical[ˈjoː.naːs]Ecclesiastical[ˈjɔː.nas]

Ĭōnas (or Jōnas, Vulg. Jon. 1, 1 al.), ae, m., = Ἰωνᾶς,

I. the Hebrew prophet Jonah, Paul. Nol. Carm. 21, 169; Sid. Carm. 16, 25. —

II. Deriv.: ĭōnaeus, a, um, adj., of or belonging to Jonah, Juvenc. 2, 711.

Jōnas, v. Ionas.

From the Ancient Greek Ἰωνᾶς (Iōnâs).