LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Obsius

Obsius m sg (genitive Obsiī or Obsī)
Classical[ˈɔp.si.ʊs]Ecclesiastical[ˈɔb.si.us]

Meaning

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

Declension

declension
formsingularplural
nominativeObsius—
genitiveObsiī
Obsī		—
dativeObsiō—
accusativeObsium—
ablativeObsiō—
vocativeObsī—

Obsĭus, i, m.,
I. a Roman surname, Plin. 36, 26, 67, § 196.—Hence, Obsĭānus, a, um, adj., belonging to Obsius: lapis, so named after the discoverer, Plin. 37, 10, 65, § 177.— Also subst.: obsĭāna, ae, f., Plin. 37, 13, 76, § 200; and obsĭāna, ōrum, plur. n., a kind of glass: obsiana numerantur, id. 36, 26, 67, § 196. (The older editions of Pliny read Obsidius and Obsidianus; hence the name obsidian applied to the stone.)

Quick answers

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