Ontario

[on-tair-ee-oh] /ɒnˈtɛər iˌoʊ/
noun
1.
a province in S Canada, bordering on the Great Lakes. 412,582 sq. mi. (1,068,585 sq. km).
Capital: Toronto.
2.
Lake, a lake between the NE United States and S Canada, between New York and Ontario province: the smallest of the Great Lakes. 193 miles (310 km) long; 7540 sq. mi. (19,530 sq. km).
3.
a city in SW California, E of Los Angeles.
Related forms
Ontarian, Ontaric
[on-tar-ik] /ɒnˈtær ɪk/ (Show IPA), adjective, noun
British Dictionary definitions for Ontario

Ontario

/ɒnˈtɛərɪəʊ/
noun
1.
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) Abbreviation Ont., ON
2.
Lake Ontario, 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)
Word Origin and History for Ontario

from Mohawk (Iroquoian) ontari:io "beautiful lake" or "great lake," from /-qtar-/ "lake, river." Related: Ontarian.

Ontario in Culture

Ontario definition


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.

Note: The Canadian side of Niagara Falls is in southern Ontario.
Note: Ottawa, Canada's capital, is in southeastern Ontario.
Note: Ontario is the most heavily industrialized, populous, and prosperous province in Canada.