LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Clūsius

Clūsius m sg (genitive Clūsiī or Clūsī)
Classical[ˈkɫʊ.si.ʊs]Ecclesiastical[ˈkluː.s̬i.us]

Meaning

  1. a river in Transpadane Gaul that flows into the Ollius, now the Chiese

Declension

declension
formsingularplural
nominativeClūsius—
genitiveClūsiī
Clūsī		—
dativeClūsiō—
accusativeClūsium—
ablativeClūsiō—
vocativeClūsī—

Clūsĭus, ii, m. cludo = claudo,
I. a cognomen of Janus, whose temple was closed in peace (opp. Patulcius, when open during war), Ov. F. 1, 130; cf. Clusivius, Macr. S. 1, 9.

In the Academy Smith's classical dictionaries

GeographyClusiusClusius (Κλούσιος), a river of Gallia Transpadana, now called the Chiese, which rises in the Rhaetian Alps, and forms a considerable lake now known as…

Quick answers

What does Clūsius mean in Latin?
Clūsius, a proper noun, means “a river in Transpadane Gaul that flows into the Ollius, now the Chiese”.
What is the genitive of Clūsius?
The genitive singular is Clūsiī. Clūsius is masculine, second declension.
How do you pronounce Clūsius?
In classical Latin, [ˈkɫʊ.si.ʊs]; in ecclesiastical (church) Latin, [ˈkluː.s̬i.us].