MEIDERICH, a town of Germany, in the Prussian Rhine province, 212 m. by rail N.E. of Ruhrort, whose river harbour is in great part within its confines. Pop. (1905), 40,822. Iron and steel works, coal-mines, saw-mills, brickworks, and machine-shops furnish the principal occupations of the inhabitants. Meiderich, which is first mentioned in 874, was united with Duisburg in 1905.
See Graeber, Tausendjährige Geschichte von Meiderich (1893).