LATIN DICTIONARYLexicon Latīnum
proper noun · femininethird declension

Dēōīs

Dēōīs f sg (genitive Dēōidis)
Classical[deːˈoː.iːs]Ecclesiastical[deˈɔː.is]

Meaning

  1. Romansynonym of Prōserpina (Roman goddess)

Declension

declension
formsingularplural
nominativeDēōīs—
genitiveDēōidis—
dativeDēōidī—
accusativeDēōidem—
ablativeDēōide—
vocativeDēōīs—

Dēōīs, ĭdis, f., Δηωΐς,
I. the daughter of Deo (Δηώ, Ceres), i. e. Proserpine, Ov. M. 6, 114; Aus. Ep. 4, 50.

Origins

Borrowed from Ancient Greek Δηωΐς (Dēōḯs), a synonym for Ancient Greek Περσεφόνη (Persephónē), the Greek counterpart of Roman Proserpina.

Quick answers

What does Dēōīs mean in Latin?
Dēōīs, a proper noun, means “synonym of Prōserpina (Roman goddess)”.
What is the genitive of Dēōīs?
The genitive singular is Dēōidis. Dēōīs is feminine, third declension.
How do you pronounce Dēōīs?
In classical Latin, [deːˈoː.iːs]; in ecclesiastical (church) Latin, [deˈɔː.is].