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Fitchburg,industrial city (1990 pop. 41,194), seat of Worcester co., N Mass., on the north branch of the Nashua River; settled c.1730, inc. as a city 1872. Its important paper industry dates approximately from 1805. Other products include fabricated steel, machinery, textiles, apparel, and plastics. Fitchburg State Univ. is there.
a city in the northeastern USA, in New England, in the state of Massachusetts. Population, 41,000 (1975; 100,000 including suburbs). Industries include machine building, metal-working, and the production of textiles, paper, and furniture.