LATIN DICTIONARYLexicon Latīnum
proper noun · masculinethird declension

Sidēris

Sidēris m sg (genitive Sidēris)
Classical[sɪˈdeː.rɪs]Ecclesiastical[siˈdɛː.ris]

Meaning

  1. a river in Hyrcania, mentioned by Pliny

Declension

declension
formsingularplural
nominativeSidēris—
genitiveSidēris—
dativeSidērī—
accusativeSidērem—
ablativeSidēre—
vocativeSidēris—

In the Academy Smith's classical dictionaries

GeographySiderisSideris a river of Hyrcania, mentioned by Pliny (6.16. s. 18), which flowed into the Caspian sea. It cannot be now determined to which river he refers…

Quick answers

What does Sidēris mean in Latin?
Sidēris, a proper noun, means “a river in Hyrcania, mentioned by Pliny”.
What is the genitive of Sidēris?
The genitive singular is Sidēris. Sidēris is masculine, third declension.
How do you pronounce Sidēris?
In classical Latin, [sɪˈdeː.rɪs]; in ecclesiastical (church) Latin, [siˈdɛː.ris].