LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Sīlānus1

Sīlānus m sg (genitive Sīlānī)
Classical[siːˈɫaː.nʊs]Ecclesiastical[siˈlaː.nus]

Meaning

  1. Marcus Junius Silanus, praetor 212 BC
  2. Decimus Junius Silanus (translator of Mago)
  3. Marcus Junius Silanus, consul 109 BC
  4. Decimus Junius Silanus, consul in 63 BC.
  5. Marcus Junius Silanus, legate of Julius Caesar, consul 25 BC.

Declension

declension
formsingularplural
nominativeSīlānus—
genitiveSīlānī—
dativeSīlānō—
accusativeSīlānum—
ablativeSīlānō—
vocativeSīlāne—

Sīlānus, i, m.,
I. a Roman surname in the Julian gens, Liv. 23, 15; 25, 2.
b. M. Silanus, Cic. Brut. 35, 135; id. Fan 10, 30. 1.—Hence, Sīlānĭānus, a, um, adj., of or named from one Silanus: senatusconsultum, Dig. 29, 5, 1, §§ 7 and 21.
Sīlānus, v. Sila
I. fin.

In the Academy Smith's classical dictionaries

noun · masculinesecond declension
sīlānus2
sīlānus m (genitive sīlānī)
Classical[siːˈɫaː.nʊs]Ecclesiastical[siˈlaː.nus]

Meaning

  1. poetica jet or stream of water (or some other liquid) arching through the air, such as one issued from a fountain
    c. 99 BCE – 55 BCE, Lucretius, De rerum natura 6.1260
    c. 25 BCE – c. 50 CE, Aulus Cornelius Celsus, De medicina 3.15

Declension

declension
formsingularplural
nominativesīlānussīlānī
genitivesīlānīsīlānōrum
dativesīlānōsīlānīs
accusativesīlānumsīlānōs
ablativesīlānōsīlānīs
vocativesīlānesīlānī

sīlānus, i, m., = σιληνός, Doric σιλανός,
I. a fountain or jet of water (usually spirting from a head of Silenus). Lucr. 6, 1265; Cels. 3, 18 med.; Fest. s. v. tullios, p. 352 Müll.; Inscr. Orell. 3321; Hyg. Fab. 169.

Origins

From Doric Greek σῑλᾱνός (sīlānós). Doublet of sīlēnus, Sīlēnus, and Silvānus, and cognate with Attic Greek σῑληνός (sīlēnós).

Quick answers

What does Sīlānus mean in Latin?
Sīlānus, a proper noun, means “Marcus Junius Silanus, praetor 212 BC; Decimus Junius Silanus (translator of Mago); Marcus Junius Silanus, consul 109 BC”.
What is the genitive of Sīlānus?
The genitive singular is Sīlānī. Sīlānus is masculine, second declension.
How do you pronounce Sīlānus?
In classical Latin, [siːˈɫaː.nʊs]; in ecclesiastical (church) Latin, [siˈlaː.nus].