RONSDORF, a town of Germany, in the Prussian Rhine province, situated on the Morsbach, a small affluent of the Rhine, 18 m. E. of Dusseldorf and 5 m. S. of Elberfeld-Barmen by rail. Pop. (1905) 14,005. It is the seat of iron, steel and copper industries, besides carrying on extensive manufactures of ribbons, trimmings and silk goods generally. It has also breweries, distilleries and electrical works.
Founded in 1737 by the followers of Elias Eller, a religious enthusiast, Ronsdorf received civic rights in 1745. The Ronsdorf sect, the members of which called themselves Zionites, is now extinct.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)