Ontario

(än terē ō)

  1. Origin: after Lake Ontario

    province of SC Canada, between the Great Lakes & Hudson Bay: 412,580 sq mi (1,068,578 sq km); pop. 10,754,000; cap. Toronto: abbrev. ON or Ont
  2. Origin: after the Cdn province

    city in S Calif.: pop. 158,000
  3. smallest & easternmost of the Great Lakes, between N.Y. & Ontario, Canada: 7,540 sq mi (19,529 sq km)

    Origin: < Fr < Iroquoian, lit., fine lake

Related Forms:

See Ontario in American Heritage Dictionary 4

  1. Abbr. ON or Ont. A province of east-central Canada. It joined the confederation in 1867. First visited by French explorers in the early 1600s, it passed to the British in 1763 and became part of the province of Quebec in 1774. It was called Upper Canada after its division from Quebec (then Lower Canada) in 1791. Reunited with Lower Canada in 1841, it became a separate province with the formation of the confederation. Toronto is the capital and the largest city. Population: 12,200,000.
  2. A city of southern California east of Los Angeles. It is a residential and industrial center in a citrus-growing region. Population: 173,000.

, Lake

The smallest of the Great Lakes, between southeast Ontario, Canada, and northwest New York. The St. Lawrence Seaway and Welland Ship Canal connect with the lake to afford passage by oceangoing vessels to the other Great Lakes.

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