Łomża (lômˈzhä) [key], town (1991 est. pop. 61,400), Podlaskie prov., NE Poland, on the Narew River. It is a railway terminus. Industries include food processing and paper and textile milling. Łomża dates from c.1000; it passed to Prussia in 1795 and to Russia in 1815 and reverted to Poland in 1921.