ontario

n. a large province in east-central Canada where the capital city, Toronto, is located.

n. a province in east-central Canada; it is the country's most populous province and contains the national capital, Ottawa.

“Many people move to Ontario to find jobs in the city of Toronto.”

“Ontario serves as the economic engine of Canada, housing both the federal government in Ottawa and the country's financial hub in Toronto.”

n. one of the five Great Lakes of North America, located between Canada and the United States.

n. the easternmost of the five Great Lakes of North America, bordered by the province of Ontario and New York State.

“We took a boat trip across Ontario to see the beautiful shoreline.”

“Lake Ontario is the smallest of the Great Lakes by surface area, yet it plays a vital role in the regional ecosystem and shipping lanes.”

n. the name of several cities in the United States, including a large one in California.

n. a toponym for several municipalities in the United States, most notably a city in San Bernardino County, California.

“The plane landed at the airport in Ontario, California, just after noon.”

“The city of Ontario in California has grown rapidly as a logistics hub due to its proximity to Los Angeles and its international airport.”

American English