| Singular | Plural | |
|---|---|---|
| Nominativ | ostreatus, ostrea | ostree, ostreae |
| Genitiv | ostree, ostreae, ostreai | ostrearum, ostreum |
| Dativ | ostree, ostreae, ostreai | ostreisque, ostreabus, ostreis, ostreisboletis |
| Akkusativ | ostream | ostreas |
| Ablativ | ostreatus, ostrea, ostread | ostreisboletis, ostreisque, ostreabus, ostreis |
| Vokativ | ostreatus, ostrea | ostree, ostreae |