LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Nostius

Nostius m sg (genitive Nostiī or Nostī)
Classical[ˈnɔs.ti.ʊs]Ecclesiastical[ˈnɔs.ti.us]

Meaning

  1. masculinesingulara Roman nomen gentile, gens or "family name"

Declension

declension
formsingularplural
nominativeNostius—
genitiveNostiī
Nostī
—
dativeNostiō—
accusativeNostium—
ablativeNostiō—
vocativeNostī—

Nostĭus, a,
I. name of a Roman gens.— Hence, Nostĭus, ii, m., name of a Roman freedman: L. Nostius Zoilus, Cic. Fam. 13, 46.

Quick answers

What does Nostius mean in Latin?
Nostius, a proper noun, means “a Roman nomen gentile, gens or "family name"”.
What is the genitive of Nostius?
The genitive singular is Nostiī. Nostius is masculine, second declension.
How do you pronounce Nostius?
In classical Latin, [ˈnɔs.ti.ʊs]; in ecclesiastical (church) Latin, [ˈnɔs.ti.us].