LATIN DICTIONARYLexicon Latīnum
proper noun · femininethird declension

Achelōis

Achelōis f sg (genitive Achelōidis)
Classical[a.kʰɛˈɫoː.ɪs]Ecclesiastical[a.keˈlɔː.is]

Meaning

  1. surname of the Sirens, daughters of Achelous

Declension

declension
formsingularplural
nominativeAchelōis—
genitiveAchelōidis—
dativeAchelōidī—
accusativeAchelōidem—
ablativeAchelōide—
vocativeAchelōis—

Ăchĕlōĭs, ĭdis,
I. patron. f. [id.], daughter of Achelous; hence (plur.), the Sirens, Ov. M. 5, 552.

Origins

From the Ancient Greek Ἀχελωίς (Akhelōís).

Quick answers

What does Achelōis mean in Latin?
Achelōis, a proper noun, means “surname of the Sirens, daughters of Achelous”.
What is the genitive of Achelōis?
The genitive singular is Achelōidis. Achelōis is feminine, third declension.
How do you pronounce Achelōis?
In classical Latin, [a.kʰɛˈɫoː.ɪs]; in ecclesiastical (church) Latin, [a.keˈlɔː.is].