LATIN DICTIONARYLexicon Latīnum
proper noun · femininethird declension

Ontariō

Ontariō f sg (genitive Ontariōnis)
Classical[ɔnˈta.ri.oː]Ecclesiastical[onˈtaː.ri.o]

Meaning

  1. New LatinOntario (a province in eastern Canada)
  2. Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)

Declension

declension
formsingularplural
nominativeOntariō—
genitiveOntariōnis—
dativeOntariōnī—
accusativeOntariōnem—
ablativeOntariōne—
vocativeOntariō—
locativeOntariōnī
Ontariōne		—

Quick answers

What does Ontariō mean in Latin?
Ontariō, a proper noun, means “Ontario (a province in eastern Canada); Ontario, Lake Ontario (a large lake in North America, one of the Great Lakes)”.
What is the genitive of Ontariō?
The genitive singular is Ontariōnis. Ontariō is feminine, third declension.
How do you pronounce Ontariō?
In classical Latin, [ɔnˈta.ri.oː]; in ecclesiastical (church) Latin, [onˈtaː.ri.o].