in the PONS Dictionary
| Case | Singular | Plural |
|---|---|---|
| Nominative | lustrum | lustra |
| Genitive | lustrī | lustrōrum |
| Dative | lustrō | lustrīs |
| Accusative | lustrum | lustra |
| Ablative | lustrō | lustrīs |
| Case | Singular | Plural |
|---|---|---|
| Nominative | lūstrum | lūstra |
| Genitive | lūstrī | lūstrōrum |
| Dative | lūstrō | lūstrīs |
| Accusative | lūstrum | lūstra |
| Ablative | lūstrō | lūstrīs |