Trois-Rivières(redirected from Trifluvian)
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a city in Canada, in southeastern Quebec. Population, 55,200 (1971). Trois-Rivières is a port on the St. Lawrence River, with a freight turnover of 4 million tons per year. It is a center of the Canadian pulp and paper industry. Local industries produce chemicals and electrotechnical items, including electric lamps and electron tubes. The city also has a metalworking industry.