obsidianus

Latin

Etymology

Misspelling of obsiānus, named after Obsius, according to Pliny, the Roman who discovered the stone in Ethiopia.

The more common nomen Obsius was used by Sillig, but the correct name was Obsidius. Both names are of Italic origin (Sabine/Samnite) and ultimately come from Proto-Italic *opis, from Proto-Indo-European *h₃ep- (“to work”) (goddess Ops).

Pronunciation
  • (Classical) IPA(key): /o.psi.diˈaː.nus/, [ɔ.psɪ.diˈaː.nʊs]

Adjective

obsidiānus (feminine obsidiāna, neuter obsidiānum); first/second-declension adjective

  1. (relational) obsidian

Declension

First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative obsidiānus obsidiāna obsidiānum obsidiānī obsidiānae obsidiāna
Genitive obsidiānī obsidiānae obsidiānī obsidiānōrum obsidiānārum obsidiānōrum
Dative obsidiānō obsidiānō obsidiānīs
Accusative obsidiānum obsidiānam obsidiānum obsidiānōs obsidiānās obsidiāna
Ablative obsidiānō obsidiānā obsidiānō obsidiānīs
Vocative obsidiāne obsidiāna obsidiānum obsidiānī obsidiānae obsidiāna

References
  • George Davis Chase, "The Origin of Roman Praenomina", in Harvard Studies in Classical Philology, vol. VIII (1897).
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