LATIN DICTIONARYLexicon Latīnum
adjectivethird-declension one-termination adjective

pernox

pernox (genitive pernoctis)
Classical[ˈpɛr.nɔks]Ecclesiastical[ˈpɛr.noks]

Meaning

  1. one terminationlasting all night
    addit et exceptās lūnā pernocte pruīnās8 CE, Ovidius, Metamorphoses 7.268

Declension

singular
formmasculinefeminineneuter
nominativepernoxpernoxpernox
genitivepernoctispernoctispernoctis
dativepernoctīpernoctīpernoctī
accusativepernoctempernoctempernox
ablativepernoctepernoctepernocte
vocativepernoxpernoxpernox
plural
formmasculinefeminineneuter
nominativepernoctēspernoctēspernoctia
genitivepernoctiumpernoctiumpernoctium
dativepernoctibuspernoctibuspernoctibus
accusativepernoctīs
pernoctēs
pernoctīs
pernoctēs
pernoctia
ablativepernoctibuspernoctibuspernoctibus
vocativepernoctēspernoctēspernoctia

per-nox, noctis, adj.,
I. continuing through the night, that lasts all night (not ante-Aug.): (bos) jacet pernox instrato cubili, Verg. G. 3, 230: luna pernox erat, was up all night, was at her full, Liv. 5, 28, 10; 21, 49, 9; 32, 11, 9; cf.: addit et exceptas lunā pernocte pruinas, by the light of the full moon, Ov. M. 7, 268; and: luna alias pernox, alias sera, etc., Plin. 2, 9, 6, § 42: stare pertinaci statu perdius atque pernox, Gell. 2, 1, 2: luditur alea pernox, Juv. 8, 10.

Origins

per noctem ("through the night") + -s or a back-formation from pernoctō.

Quick answers

What does pernox mean in Latin?
pernox, a adjective, means “lasting all night”.
How do you pronounce pernox?
In classical Latin, [ˈpɛr.nɔks]; in ecclesiastical (church) Latin, [ˈpɛr.noks].