Ontario

geographical name

On·​tar·​io än-ˈter-ē-ˌō How to pronounce Ontario (audio)
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
Ontarian adjective or noun

Dictionary Entries Near Ontario

Cite this Entry

“Ontario.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ontario. Accessed 21 Jul. 2024.

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