出典:Wiktionary
From Ancient Greek κρύσταλλος (krústallos, “ice”), from κρύος (krúos, “icy cold, chill, frost”). The reasoning behind the change from masculine to neuter is unknown.
crystallum n (genitive crystallī); second declension
Second-declension noun (neuter).
| Case | Singular | Plural |
|---|---|---|
| Nominative | crystallum | crystalla |
| Genitive | crystallī | crystallōrum |
| Dative | crystallō | crystallīs |
| Accusative | crystallum | crystalla |
| Ablative | crystallō | crystallīs |
| Vocative | crystallum | crystalla |