LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Herdōnius

Herdōnius m sg (genitive Herdōniī or Herdōnī)
Classical[hɛrˈdoː.ni.ʊs]Ecclesiastical[erˈdɔː.ni.us]

Meaning

  1. a Roman nomen gentile, gens or "family name" famously held by
  2. Turnus Herdonius, a statesman of Aricia

Declension

declension
formsingularplural
nominativeHerdōnius—
genitiveHerdōniī
Herdōnī		—
dativeHerdōniō—
accusativeHerdōnium—
ablativeHerdōniō—
vocativeHerdōnī—

Herdonĭus, ĭi, m.,
I. a proper name: Turnus H., of Aricia, Liv. 1, 50 sq.: Appius H., a Sabine, id. 3, 15 sq.

Quick answers

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