LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Itius

Itius m sg (genitive Itiī or Itī)

Meaning

  1. masculinesingularLatin name for a sea port on the English Channel in what is now Nord-Pas-de-Calais, France, though its precise location is unknown; mentioned by Julius Caesar
    Collaudatis militibus atque eis qui negotio praefuerant, quid fieri velit ostendit atque omnes ad portum Itium convenire iubet,Having commended the soldiers and those who had presided over the work, he informs them what he wishes to be done, and orders all the ships to assemble at port Itius,c. 52 BCE, Julius Caesar, Commentarii de bello Gallico 5.2
    His rebus constitutis Caesar ad portum Itium cum legionibus pervenit.These matters being settled, Caesar went to port Itius with the legions.c. 52 BCE, Julius Caesar, Commentarii de bello Gallico 5.5

Declension

declension
formsingularplural
nominativeItius—
genitiveItiī
Itī
—
dativeItiō—
accusativeItium—
ablativeItiō—
vocativeItī—

Itius (Iccius) Portus,
I. a port of the Morini, in Belgic Gaul, from which Cæsar passed over to Britain, now Wissant or Witsand, a few miles east of Cape Grisnez, Caes. B. G. 5, 2, 2; 5, 5, 1.

Origins

From Gaulish Ition.

Quick answers

What does Itius mean in Latin?
Itius, a proper noun, means “Latin name for a sea port on the English Channel in what is now Nord-Pas-de-Calais, France, though its precise location is unknown; mentioned by Julius Caesar”.
What is the genitive of Itius?
The genitive singular is Itiī. Itius is masculine, second declension.