LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Catōnius

Catōnius m sg (genitive Catōniī or Catōnī)
Classical[kaˈtoː.ni.ʊs]Ecclesiastical[kaˈtɔː.ni.us]

Meaning

  1. a Roman nomen gentile, gens or "family name" famously held by
  2. Catonius Justus, a Roman centurion

Declension

declension
formsingularplural
nominativeCatōnius—
genitiveCatōniī
Catōnī		—
dativeCatōniō—
accusativeCatōnium—
ablativeCatōniō—
vocativeCatōnī—

Quick answers

What does Catōnius mean in Latin?
Catōnius, a proper noun, means “a Roman nomen gentile, gens or "family name" famously held by”.
What is the genitive of Catōnius?
The genitive singular is Catōniī. Catōnius is masculine, second declension.
How do you pronounce Catōnius?
In classical Latin, [kaˈtoː.ni.ʊs]; in ecclesiastical (church) Latin, [kaˈtɔː.ni.us].