LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Longidius

Longidius m sg (genitive Longidiī or Longidī)
Classical[ɫɔŋˈɡɪ.di.ʊs]Ecclesiastical[lon̠ʲˈd͡ʒiː.di.us]

Meaning

  1. masculinesingulara Roman nomen gentile, gens or "family name", famously held by
  2. masculinesingularGnaeus Longidius, a Roman aedile from Arpinum

Declension

declension
formsingularplural
nominativeLongidius—
genitiveLongidiī
Longidī		—
dativeLongidiō—
accusativeLongidium—
ablativeLongidiō—
vocativeLongidī—

Origins

Ultimately from the Roman cognomen Longus.

Quick answers

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