LATIN DICTIONARYLexicon Latīnum
numeralfirst/second-declension numeral

octōgēsimus

octōgēsimus (feminine octōgēsima, neuter octōgēsimum)
Classical[ɔk.toːˈɡeː.sɪ.mʊs]Ecclesiastical[ok.toˈd͡ʒɛː.s̬i.mus]

Meaning

  1. numeraleightieth

Declension

singular
formmasculinefeminineneuter
nominativeoctōgēsimusoctōgēsimaoctōgēsimum
genitiveoctōgēsimīoctōgēsimaeoctōgēsimī
dativeoctōgēsimōoctōgēsimaeoctōgēsimō
accusativeoctōgēsimumoctōgēsimamoctōgēsimum
ablativeoctōgēsimōoctōgēsimāoctōgēsimō
vocativeoctōgēsimeoctōgēsimaoctōgēsimum
plural
formmasculinefeminineneuter
nominativeoctōgēsimīoctōgēsimaeoctōgēsima
genitiveoctōgēsimōrumoctōgēsimārumoctōgēsimōrum
dativeoctōgēsimīsoctōgēsimīsoctōgēsimīs
accusativeoctōgēsimōsoctōgēsimāsoctōgēsima
ablativeoctōgēsimīsoctōgēsimīsoctōgēsimīs
vocativeoctōgēsimīoctōgēsimaeoctōgēsima

octōgēsĭmus, a, um,
I. num. ord. adj. [octoginta], the eightieth: quartum annum ago et octogesimum, Cic. Sen. 10, 32; 2, 4: solstitia, Juv. 4, 92.

Origins

  1. Proto-Indo-European*oḱtṓw
  2. Proto-Indo-European*déḱm̥
  3. Proto-Indo-European*déḱm̥-t
  4. Proto-Indo-European*dḱómth₂
  5. Proto-Indo-European*oktōḱomt
  6. Latinoctōgēsimus

Latin -ēsimus Latin octōgēsimus From octōgintā (“eighty”) + -ēsimus (“-th”).

Quick answers

What does octōgēsimus mean in Latin?
octōgēsimus, a numeral, means “eightieth”.
How do you pronounce octōgēsimus?
In classical Latin, [ɔk.toːˈɡeː.sɪ.mʊs]; in ecclesiastical (church) Latin, [ok.toˈd͡ʒɛː.s̬i.mus].
Where does octōgēsimus come from?
Proto-Indo-European *oḱtṓw → Proto-Indo-European *déḱm̥ → Proto-Indo-European *déḱm̥-t → Proto-Indo-European *dḱómth₂ → Proto-Indo-European *oktōḱomt → Latin octōgēsimus.