LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Vespasiānus

Vespasiānus m (genitive Vespasiānī)
Classical[wɛs.pa.siˈaː.nʊs]Ecclesiastical[ves.pa.s̬iˈaː.nus]

Meaning

  1. Vespasian (Roman cognomen)
    Titus Flavius Vespasianusthe Roman emperor from AD 69 to 79, succeeded by his son Titus

Declension

declension
formsingularplural
nominativeVespasiānusVespasiānī
genitiveVespasiānīVespasiānōrum
dativeVespasiānōVespasiānīs
accusativeVespasiānumVespasiānōs
ablativeVespasiānōVespasiānīs
vocativeVespasiāneVespasiānī

Vespăsĭānus, i, m.: Ti. Flavius Vespasianus,
I. a Roman emperor, reigned between 69 and 79 A. D., Suet. Vesp. 1 sq.; Sid. Carm. 5, 327.

Origins

Apparently from Vespasiae, a town near Nursia in Samnium.

Quick answers

What does Vespasiānus mean in Latin?
Vespasiānus, a proper noun, means “Vespasian (Roman cognomen)”.
What is the genitive of Vespasiānus?
The genitive singular is Vespasiānī. Vespasiānus is masculine, second declension.
How do you pronounce Vespasiānus?
In classical Latin, [wɛs.pa.siˈaː.nʊs]; in ecclesiastical (church) Latin, [ves.pa.s̬iˈaː.nus].