septentriō, septentriōnis m 'Ursa Major; Ursa Minor; the north'
masculine, third declension
| Singular | Plural | |
|---|---|---|
| Nominative | septentriō | septentriōnēs |
| Genitive | septentriōnis | septentriōnum |
| Dative | septentriōnī | septentriōnibus |
| Accusative | septentriōnem | septentriōnēs |
| Ablative | septentriōne | septentriōnibus |
| Vocative | septentriō | septentriōnēs |