LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Ianssonius

Ianssonius m sg (genitive Ianssoniī or Ianssonī)
Classical[jãːsˈsɔ.ni.ʊs]Ecclesiastical[jansˈsɔː.ni.us]

Meaning

  1. New Latinmasculinesingulara surname from Dutch — famously held by
  2. New LatinmasculinesingularJan Janssonius (1588–1664), Dutch cartographer and publisher.

Declension

declension
formsingularplural
nominativeIanssonius—
genitiveIanssoniī
Ianssonī		—
dativeIanssoniō—
accusativeIanssonium—
ablativeIanssoniō—
vocativeIanssonī—

Origins

From Dutch Janszoon + Latin -ius.

Quick answers

What does Ianssonius mean in Latin?
Ianssonius, a proper noun, means “a surname from Dutch — famously held by”.
What is the genitive of Ianssonius?
The genitive singular is Ianssoniī. Ianssonius is masculine, second declension.
How do you pronounce Ianssonius?
In classical Latin, [jãːsˈsɔ.ni.ʊs]; in ecclesiastical (church) Latin, [jansˈsɔː.ni.us].