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Oshawa(ŏsh`əwə), city (1991 pop. 129,344), SE Ont., Canada, a port on Lake Ontario; since 1974 it has been part of the regional municipality of Durham (1991 pop. 409,070). Oshawa is the home site of General Motors of Canada, and the production of automobiles, begun in 1907, was long the leading industry, but the significance of it and other manufacturing has greatly decreased since the 1980s. Education and health and related sciences are increasingly economically important. Other products include railroad and mining equipment, metals, and rubber products; there also is food processing. The town is on the site of a French trading post. There are automobile, art, and history museums.
a city in Ontario, Canada, on the northern shore of Lake Ontario. Population, 91,000 (1971). Oshawa is a major center of the automotive industry, with branches of the American firm General Motors.
a city in central Canada, in SE Ontario on Lake Ontario: motor-vehicle industry. Pop.: 139 051 (2001)