On·tar·io (än ter′ē ō)

1. Etymology: 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. Etymology: 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)

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