LATIN DICTIONARYLexicon Latīnum
proper noun · neutersecond declension

Cominium

Cominium n sg (genitive Cominiī or Cominī)

Meaning

  1. neutersingulara city in Samnium, whose location is still unknown

Declension

declension
formsingularplural
nominativeCominium—
genitiveCominiī
Cominī		—
dativeCominiō—
accusativeCominium—
ablativeCominiō—
vocativeCominium—
locativeCominiī—

Cōmĭnĭum, ĭi, n.,
I. a town of Samnium, Liv. 10, 39, 5 sq., and id. 10, 43, 1 sq.

In the Academy Smith's classical dictionaries

GeographyCominiumCominium (Κομίνιον), a city of Samnium, the situation of which is very uncertain. There are, indeed, strong reasons to suppose that there were two pla…

Quick answers

What does Cominium mean in Latin?
Cominium, a proper noun, means “a city in Samnium, whose location is still unknown”.
What is the genitive of Cominium?
The genitive singular is Cominiī. Cominium is neuter, second declension.