obsidianus
Latin
Etymology
Named after Obsidius, who was, according to Pliny, the Roman who discovered the stone in Aethiopia.
The more common nomen Obsius was used by Sillig, but the correct name was Obsidius. Both names are of Italic (Sabine/Samnite) origin and ultimately come from Proto-Italic *op(i)s, from Proto-Indo-European *h₃ep- (“to work, toil”) (compare the goddess Ops).
Pronunciation
- (Classical) IPA(key): /ob.si.diˈaː.nus/, [ɔps̠ɪd̪iˈäːnʊs̠]
- (Ecclesiastical) IPA(key): /ob.si.diˈa.nus/, [obsid̪iˈäːnus]
Adjective
obsidiānus (feminine obsidiāna, neuter obsidiānum); first/second-declension adjective
- (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).