| Singular | Plural | |
|---|---|---|
| Nominativ | refectoriom, refectorium | refectoria |
| Genitiv | refectorii | refectoriorum, refectorium |
| Dativ | refectorio | refectoriis |
| Akkusativ | refectorium | refectoria |
| Ablativ | refectorio | refectoriis |
| Vokativ | refectorium | refectoria |
12 (14) Formen für „refectorium“