LATIN DICTIONARYLexicon Latīnum
proper noun · femininesecond declension

Sȳros

Sȳros f sg (genitive Sȳrī)
Classical[ˈsyː.rɔs]Ecclesiastical[ˈsiː.ros]

Meaning

  1. Syros (also Syra), Greece, one of the Cyclades islands

Declension

declension
formsingularplural
nominativeSȳros—
genitiveSȳrī—
dativeSȳrō—
accusativeSȳron
Sȳrum		—
ablativeSȳrō—
vocativeSȳre—

Sȳros, i, f., = Σῦρος,
I. one of the Cyclades, between Delos and Paros, now Syra, Mel. 2, 7; Plin. 14, 12, 22, § 67; Ov. M. 13, 175.—Hence, Sȳrĭus, a, um, adj., of or belonging to Syros, Plin. 33, 12, 56, § 158.

Origins

Borrowed from Ancient Greek Σῦρος (Sûros). Contrast sy̆rus (“syrian”).

In the Academy Smith's classical dictionaries

GeographySyrosSyros or SYRUS (Σῦρος, also Συρίη, Hom. Od. 15.403, and Σύρα, D. L. 1.115; Hesych.; Suid.: Eth. Σύριος: Syra (Σύρα), and the present inhabitants call …

Quick answers

What does Sȳros mean in Latin?
Sȳros, a proper noun, means “Syros (also Syra), Greece, one of the Cyclades islands”.
What is the genitive of Sȳros?
The genitive singular is Sȳrī. Sȳros is feminine, second declension.
How do you pronounce Sȳros?
In classical Latin, [ˈsyː.rɔs]; in ecclesiastical (church) Latin, [ˈsiː.ros].