LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

charōnēus

charōnēus (feminine charōnēa, neuter charōnēum)
Classical[kʰa.roːˈneː.ʊs]Ecclesiastical[ka.roˈnɛː.us]

Meaning

  1. adjectiveCharonic; Charonian (of or pertaining to Charon or the underworld in Greek mythology)
    spiracula vocant, alii charonea, scrobes mortiferum spiritum exhalantesThey are typically called vents, although others call them Charon’s ditches for their death-bringing vapors77 CE – 79 CE, Plinius Maior, Naturalis Historia 2.92

Declension

singular
formmasculinefeminineneuter
nominativecharōnēuscharōnēacharōnēum
genitivecharōnēīcharōnēaecharōnēī
dativecharōnēōcharōnēaecharōnēō
accusativecharōnēumcharōnēamcharōnēum
ablativecharōnēōcharōnēācharōnēō
vocativecharōnēecharōnēacharōnēum
plural
formmasculinefeminineneuter
nominativecharōnēīcharōnēaecharōnēa
genitivecharōnēōrumcharōnēārumcharōnēōrum
dativecharōnēīscharōnēīscharōnēīs
accusativecharōnēōscharōnēāscharōnēa
ablativecharōnēīscharōnēīscharōnēīs
vocativecharōnēīcharōnēaecharōnēa

Origins

From Ancient Greek Χᾰρώνειος (Khărṓneios); equivalent to Charōn + -ēus.

Quick answers

What does charōnēus mean in Latin?
charōnēus, a adjective, means “Charonic; Charonian (of or pertaining to Charon or the underworld in Greek mythology)”.
How do you pronounce charōnēus?
In classical Latin, [kʰa.roːˈneː.ʊs]; in ecclesiastical (church) Latin, [ka.roˈnɛː.us].