Ontario

[on-tair-ee-oh]

noun

1. a province in southern Canada, bordering on the Great Lakes. 412,582 square miles (1,068,585 square kilometers). Toronto.

2. Lake Ontario, a lake between the northeastern United States and southern Canada, between New York and Ontario province: the smallest of the Great Lakes. 193 miles (310 kilometers) long; 7,540 square miles (19,530 square kilometers).

3. a city in southwestern California, east of Los Angeles.

Ontario

/ ɒnˈtɛərɪəʊ /

noun

1. Abbreviation: Ont..  ON. a province of central Canada: lies mostly on the Canadian Shield and contains the fertile plain of the lower Great Lakes and the St Lawrence River, one of the world's leading industrial areas; the second largest and the most populous province. Capital: Toronto. Pop: 12 392 721 (2004 est). Area: 891 198 sq km (344 092 sq miles)

2. a lake between the US and Canada, bordering on New York State and Ontario province: the smallest of the Great Lakes; linked with Lake Erie by the Niagara River and Welland Canal; drained by the St Lawrence. Area: 19 684 sq km (7600 sq miles)

Ontario

1. Province in central Canada, bordered by Hudson Bay and James Bay to the north; Quebec to the east; the St. Lawrence River, Lake Ontario, Lake Erie, Lake Huron, Lake Superior, and Minnesota to the south; and Manitoba to the west. Its capital and largest city is Toronto.

Ontario is the most heavily industrialized, populous, and prosperous province in Canada.

The Canadian side of Niagara Falls is in southern Ontario.

Ottawa, Canada's capital, is in southeastern Ontario.

Other Word Forms

• Ontarian adjective
• Ontaric adjective

Example Sentences

A research team from North York General Hospital and partner institutions analyzed data from 6,140,595 people living in Ontario, Canada.

Read more on Science Daily

The analyst says loan growth remains subdued, particularly in Ontario and the Greater Toronto Area, which represents 60% of EQB’s portfolio.

Read more on The Wall Street Journal

Lake effect snow downwind of Lakes Superior, Erie, and Ontario could reduce visibility on roadways on Thanksgiving, with more than a foot of snow expected in some areas by Friday.

Read more on Barron's

In Ontario, a 16-year-old said he spent five to eight hours a day with his chatbot friends before he quit recently.

Read more on The Wall Street Journal

But earlier this week, an Ontario appeals court upheld a 2023 ruling that decided most of the seized money should go to the Canadian government, putting an end to his chances of recouping it.

Read more on BBC