LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Casius

Casius m sg (genitive Casiī or Casī)
Classical[ˈka.si.ʊs]Ecclesiastical[ˈkaː.s̬i.us]

Meaning

  1. masculinesingulara mountain in Syria, whose base was bathed by the river Orontes
  2. masculinesingulara mountain in Egypt situated near the borders with Arabia
  3. masculinesingulara river in Albania, forming the northern boundary of the country

Declension

declension
formsingularplural
nominativeCasius—
genitiveCasiī
Casī		—
dativeCasiō—
accusativeCasium—
ablativeCasiō—
vocativeCasī—
locativeCasiī—

Căsĭus mons, = Κάσιον ὄρος.
I. A very high mountain in Syria, on the Orontes, now Jebel-Okrab, Plin. 5, 22, 18, § 80; Amm. 14, 8, 10; 22, 14, 4.—
II. A mountain between Lower Egypt and Arabia, with a temple of Jupiter, near which Pompey was murdered, now El Kas or El Katieh, Mel. 1, 10; 3, 8, 3; Plin. 5, 12, 14, § 68.—Hence, Căsĭus, a, um, adj.: rupes, Luc. 10, 434: harenae, id. 8, 539: Juppiter, Enn. Eutr. 54 Vahl.; Plin. 5, 12, 14, § 68.

Quick answers

What does Casius mean in Latin?
Casius, a proper noun, means “a mountain in Syria, whose base was bathed by the river Orontes; a mountain in Egypt situated near the borders with Arabia; a river in Albania, forming the northern boundary of the country”.
What is the genitive of Casius?
The genitive singular is Casiī. Casius is masculine, second declension.
How do you pronounce Casius?
In classical Latin, [ˈka.si.ʊs]; in ecclesiastical (church) Latin, [ˈkaː.s̬i.us].