-ulum

See also: ulûm

Latin

Etymology 1

A phonologically conditioned alteration (allomorph) of Latin -culum, from Proto-Indo-European *-tlom, generated by a rule deleting the suffix-initial stop in positions after stops.

Pronunciation

• (Classical Latin) IPA^(key): /u.lum/, [ʊɫ̪ʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /u.lum/, [ulum] (stressed on the antepenult)

Suffix

-ulum n (genitive -ulī); second declension

1. Used to form a noun of instrument or means from a verb.

   ‎amicio + ‎-ulum → ‎amiculum

   ‎specio + ‎-ulum → ‎speculum < *spek-klo- < *spek-tlo-

   ‎vincio + ‎-ulum → ‎vinculum < *vink-klo- < *vink-tlo-

   ‎cingo + ‎-ulum → ‎cingulum

Declension

Second-declension noun (neuter).

Case	Singular	Plural
Nominative	-ulum	-ula
Genitive	-ulī	-ulōrum
Dative	-ulō	-ulīs
Accusative	-ulum	-ula
Ablative	-ulō	-ulīs
Vocative	-ulum	-ula

Etymology 2

Inflected from -ulus.

Suffix

1. nominative neuter singular of -ulus
2. accusative masculine singular of -ulus
3. accusative neuter singular of -ulus
4. vocative neuter singular of -ulus

References

• CLARKSON, James, Indo-European Word Formation: Proceedings from the International Conference, 2002.