LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Comenius

Comenius m sg (genitive Comeniī or Comenī)
Classical[kɔˈmɛ.ni.ʊs]Ecclesiastical[koˈmɛː.ni.us]

Meaning

  1. New Latinmasculinesingulara surname from Czech — famously held by
  2. New LatinmasculinesingularJan Amos Komenský (1592–1670), Czech philosopher, pedagogue and theologian.

Declension

declension
formsingularplural
nominativeComenius—
genitiveComeniī
Comenī		—
dativeComeniō—
accusativeComenium—
ablativeComeniō—
vocativeComenī—

Origins

From Czech Komenský + Latin -ius.

Quick answers

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