From Ancient Greek σφηνοειδής (sphēnoeidḗs, “wedge-shaped”), from σφήν (sphḗn, “wedge”) + -ειδής (-eidḗs, “-form, -like”).
(modern Italianate Ecclesiastical) IPA(key): /sfe.noˈi.des/,
sphēnoīdēs (neuter sphēnoīdes or sphēnoīdēs); third-declension one-termination adjective (Greek-type)
Third-declension one-termination adjective (Greek-type).
| singular | plural | ||||
|---|---|---|---|---|---|
| masc./fem. | neuter | masc./fem. | neuter | ||
| nominative | sphēnoīdēs | sphēnoīdes1 sphēnoīdēs |
sphēnoīdēs | sphēnoīda sphēnoīdia2 | |
| genitive | sphēnoīdis | sphēnoīdum sphēnoīdium2 | |||
| dative | sphēnoīdī | sphēnoīdibus | |||
| accusative | sphēnoīdem | sphēnoīdes1 sphēnoīdēs |
sphēnoīdēs | sphēnoīda sphēnoīdia2 | |
| ablative | sphēnoīde sphēnoīdī2 |
sphēnoīdibus | |||
| vocative | sphēnoīdes1 sphēnoīdēs |
sphēnoīdēs | sphēnoīda sphēnoīdia2 | ||
1It is unknown if Classical Latin preserved (or would have preserved) the shortness of the original Greek short ending.
2It is unknown whether adjectives of this type would use i-stem or consonant-stem endings in Classical Latin: the relevant forms are not attested. Depending on the word, either ending or both may be attested in New Latin.