LATIN DICTIONARYLexicon Latīnum
noun · neutersecond declension

decennium

decennium n (genitive decenniī or decennī)
Classical[dɛˈkɛn.ni.ũː]Ecclesiastical[deˈt͡ʃɛn.ni.um]

Meaning

  1. neuterobsoletea period of ten years, a decennium, decade

Declension

declension
formsingularplural
nominativedecenniumdecennia
genitivedecenniī
decennī		decenniōrum
dativedecenniōdecenniīs
accusativedecenniumdecennia
ablativedecenniōdecenniīs
vocativedecenniumdecennia

dĕcennĭum, ii, n. decennis.
I. A period of ten years (post-class.), App. de Deo. Socr. p. 52, 7 al.—
II. i. q. decennalia, Trebell. Gallien. 7 fin.

Origins

  1. Proto-Indo-European*déḱm̥
  2. Proto-Italic*dekəm
  3. Latindecennium

Proto-Indo-European *h₂et- Proto-Indo-European *-nós Proto-Indo-European *h₂etnós Proto-Italic *atnos? Latin annus Proto-Indo-European *-is Proto-Indo-European *-h₂ Proto-Indo-European *-ih₂der.? Proto-Italic *-is Latin -is Latin decennis Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -iusnom. Latin -ium Latin decennium From decennis + -ium (suffix forming abstract nouns).

Descendants
  • Englishdecennium
  • Danishdecennium
  • Dutchdecennium
  • Norwegiandecennium
  • Norwegiandesennium
  • Swedishdecennium

In English words that came into English from decennium

  • decennialdecennialis
  • decennaliadecennālia
  • decenniumdecennium

Quick answers

What does decennium mean in Latin?
decennium, a noun, means “a period of ten years, a decennium, decade”.
What is the genitive of decennium?
The genitive singular is decenniī. decennium is neuter, second declension.
How do you pronounce decennium?
In classical Latin, [dɛˈkɛn.ni.ũː]; in ecclesiastical (church) Latin, [deˈt͡ʃɛn.ni.um].
Where does decennium come from?
Proto-Indo-European *déḱm̥ → Proto-Italic *dekəm → Latin decennium.
Which English words come from decennium?
English words that go back to Latin decennium include decennium, decennial and decennalia.