LATIN DICTIONARYLexicon Latīnum
numeralfirst/second-declension numeral

ūndēvīcēsimus

ūndēvīcēsimus (feminine ūndēvīcēsima, neuter ūndēvīcēsimum)
Classical[uːn.deː.wiːˈkeː.sɪ.mʊs]Ecclesiastical[un.de.viˈt͡ʃɛː.s̬i.mus]

Meaning

  1. numeralnineteenth

Declension

singular
formmasculinefeminineneuter
nominativeūndēvīcēsimusūndēvīcēsimaūndēvīcēsimum
genitiveūndēvīcēsimīūndēvīcēsimaeūndēvīcēsimī
dativeūndēvīcēsimōūndēvīcēsimaeūndēvīcēsimō
accusativeūndēvīcēsimumūndēvīcēsimamūndēvīcēsimum
ablativeūndēvīcēsimōūndēvīcēsimāūndēvīcēsimō
vocativeūndēvīcēsimeūndēvīcēsimaūndēvīcēsimum
plural
formmasculinefeminineneuter
nominativeūndēvīcēsimīūndēvīcēsimaeūndēvīcēsima
genitiveūndēvīcēsimōrumūndēvīcēsimārumūndēvīcēsimōrum
dativeūndēvīcēsimīsūndēvīcēsimīsūndēvīcēsimīs
accusativeūndēvīcēsimōsūndēvīcēsimāsūndēvīcēsima
ablativeūndēvīcēsimīsūndēvīcēsimīsūndēvīcēsimīs
vocativeūndēvīcēsimīūndēvīcēsimaeūndēvīcēsima

undēvīcēsĭmus or undēvīgēsĭ-mus, a, um, adj. undeviginti,
I. the nineteenth: anno undevicesimo post ejus mortem, Cic. Sen. 5, 14: expleto aetatis undevicesimo anno, Quint. 6, praef. § 4; Tac. A. 1, 45 (al. unetvicesimus): die undevigesimo, Col. 8, 5, 14.—The second and third syllable scanned short: senserat ire aquilas legio undevigesima, cujus, etc., Poët. ap. Anth. Lat. 2, p. 21.

Origins

Formally from ūn(us) (“one”) + dē (“from”) + vīcēsimus (“twentieth”), ordinal form of ūndēvīgintī (“nineteen”).

Quick answers

What does ūndēvīcēsimus mean in Latin?
ūndēvīcēsimus, a numeral, means “nineteenth”.
How do you pronounce ūndēvīcēsimus?
In classical Latin, [uːn.deː.wiːˈkeː.sɪ.mʊs]; in ecclesiastical (church) Latin, [un.de.viˈt͡ʃɛː.s̬i.mus].