出典:Wiktionary
出典:『Wiktionary』 (2025/08/27 14:56 UTC 版)
Functions as a phonologically conditioned alternative form (allomorph) of the suffix -culum, from Proto-Indo-European *-tlom. It possibly developed from a phonological rule that deleted the initial stop of the suffix when it came after a stop, or from simplification of geminates (e.g. *spek-tlo- > *spek-klo-). However, Sen 2015 argues that instrumental ending -ulum is derived from the neuter of the etymologically distinct suffix -ulus (found in some agent nouns, such as figulus (“potter”)) from Proto-Italic *-elos. Compare the feminine variant -ula.
-ulum n (genitive -ulī); second declension
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | -ulum | -ula |
| genitive | -ulī | -ulōrum |
| dative | -ulō | -ulīs |
| accusative | -ulum | -ula |
| ablative | -ulō | -ulīs |
| vocative | -ulum | -ula |
-ulum