Ontario

geographical name
On·​tar·​io | \ än-ˈter-ē-ˌō How to pronounce Ontario (audio) \

Definition of Ontario

1 province of eastern Canada between the Great Lakes and Hudson Bay and bordering on the United States (New York, Michigan, and Minnesota); capital Toronto area 350,814 square miles (908,608 square kilometers), population 12,851,821

Note: Ontario is the most populous province of Canada.

2 city in southwestern California northwest of Riverside population 163,924

Other Words from Ontario

Ontarian \ än-​ˈter-​ē-​ən How to pronounce Ontario (audio) \ adjective or noun

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Dictionary Entries Near Ontario

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Ontario

Ontario, Lake

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Cite this Entry

“Ontario.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ontario. Accessed 30 Sep. 2022.

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