LATIN DICTIONARYLexicon Latīnum
noun · femininefirst declension

gehenna

gehenna f (genitive gehennae)
Classical[ɡeˈ(ɦ)ɛn.na]Ecclesiastical[d͡ʒeˈɛn.na]

Meaning

  1. femininethe Hinnom Valley (a valley near Jerusalem where children were immolated for Moloch)
  2. feminineGehenna, hell
    Ego autem dico vobis quia omnis qui irascitur fratri suo reus erit iudicio qui autem dixerit fratri suo racha reus erit concilio qui autem dixerit fatue reus erit gehennae ignis.But I tell you, that everyone who is angry with his brother without a cause shall be in danger of the judgment; and whoever shall say to his brother, ‘Raca!’ shall be in danger of the council; and whoever shall say, ‘You fool!’ shall be in danger of the fire of Gehenna. ― World English Bible translationAD 382–4, Biblia Vulgata, Matth. 5:22

Declension

declension
formsingularplural
nominativegehennagehennae
genitivegehennaegehennārum
dativegehennaegehennīs
accusativegehennamgehennās
ablativegehennāgehennīs
vocativegehennagehennae
locativegehennaegehennīs

gĕhenna, ae, f., = γέεννα (Hebrew, Ge-Hinnom, Ge-Ben-Hinnom), a valley near Jerusalem where children were offered to Moloch;
I. hence, transf., hell, Vulg. Matt. 5, 22 sq.; 10, 28; 18, 9 al.; Tert. Apol. 47; Prud. Cath. 6, 111; 11, 112; Aus. Ephem. ap. Orat. 56 et saep.—
II. Deriv. gĕhen-nālis, e, hellish, of hell: incendium, Cassiod. Amic. 22, § 32: poenae, id. ib. 24, § 4.

Origins

From the Ancient Greek γέεννᾰ (géennă), from the Biblical Hebrew גֵּיהִנּוֹם (Ge'henom).

Quick answers

What does gehenna mean in Latin?
gehenna, a noun, means “the Hinnom Valley (a valley near Jerusalem where children were immolated for Moloch); Gehenna, hell”.
What is the genitive of gehenna?
The genitive singular is gehennae. gehenna is feminine, first declension.
How do you pronounce gehenna?
In classical Latin, [ɡeˈ(ɦ)ɛn.na]; in ecclesiastical (church) Latin, [d͡ʒeˈɛn.na].