LATIN DICTIONARYLexicon Latīnum
adjectivethird-declension two-termination adjective

sēscēnāris

sēscēnāris (neuter sēscēnāre)
Classical[seːs.keːˈnaː.rɪs]Ecclesiastical[seʃ.ʃeˈnaː.ris]

Meaning

  1. two terminationThe meaning of this term is uncertain. Possibilities include: one and a half years old
    exposuit patribus conscriptis bovis sescenaris, quem immolavisset, iocur diffluxissehe explained to the senators that the liver of the […] ox which he had sacrificed had disappeared27 BCE – 25 BCE, Titus Livius, Ab urbe condita 41.15.1

Declension

singular
formmasculinefeminineneuter
nominativesēscēnārissēscēnārissēscēnāre
genitivesēscēnārissēscēnārissēscēnāris
dativesēscēnārīsēscēnārīsēscēnārī
accusativesēscēnāremsēscēnāremsēscēnāre
ablativesēscēnārīsēscēnārīsēscēnārī
vocativesēscēnārissēscēnārissēscēnāre
plural
formmasculinefeminineneuter
nominativesēscēnārēssēscēnārēssēscēnāria
genitivesēscēnāriumsēscēnāriumsēscēnārium
dativesēscēnāribussēscēnāribussēscēnāribus
accusativesēscēnārīs
sēscēnārēs
sēscēnārīs
sēscēnārēs
sēscēnāria
ablativesēscēnāribussēscēnāribussēscēnāribus
vocativesēscēnārēssēscēnārēssēscēnāria

sescēnāris, e, adj. deriv. and signif. unknown:
I. bovis sescenaris jecur, Liv. 41, 15, 1 (but the conjectural correction to sescennalis or sexennis is improbable) Weissenb. ad loc.

Origins

Conventionally explained as a corruption of a hypothesised *sēscennālis, from sēsqui- (“one and a half”) + annālis (“yearly”); compare decennālis (“ten-yearly”). However, Lewis and Short regard as "improbable" the "conjectural correction" to *sēscennālis or alternatively to sexennis (“six-year-old”).

Quick answers

What does sēscēnāris mean in Latin?
sēscēnāris, a adjective, means “The meaning of this term is uncertain. Possibilities include: one and a half years old”.
How do you pronounce sēscēnāris?
In classical Latin, [seːs.keːˈnaː.rɪs]; in ecclesiastical (church) Latin, [seʃ.ʃeˈnaː.ris].