LATIN DICTIONARYLexicon Latīnum
proper noun · masculinethird declension

Acinasis

Acinasis m sg (genitive Acinasis)
Classical[aˈkɪ.na.sɪs]Ecclesiastical[aˈt͡ʃiː.na.s̬is]

Meaning

  1. masculinesingulara river in Pontus, mentioned by Arrian
    Arrianus vero inter utrumque tres amnes numeravit, Acinasim, Bathym et AcampsimBut Arrian counted three rivers between them both, the Acinasis, Bathys, and Acampsis1826, Joannes Francisus Gail, Geographi graeci minores (page 455)

Declension

declension
formsingularplural
nominativeAcinasis—
genitiveAcinasis—
dativeAcinasī—
accusativeAcinasim
Acinasem		—
ablativeAcinase—
vocativeAcinasis—

Origins

Borrowed from Ancient Greek Ἀκινάσις (Akinásis) (also found as Ἀκινάσης (Akinásēs)).

Quick answers

What does Acinasis mean in Latin?
Acinasis, a proper noun, means “a river in Pontus, mentioned by Arrian”.
What is the genitive of Acinasis?
The genitive singular is Acinasis. Acinasis is masculine, third declension.
How do you pronounce Acinasis?
In classical Latin, [aˈkɪ.na.sɪs]; in ecclesiastical (church) Latin, [aˈt͡ʃiː.na.s̬is].