Geestermunde, a seaport of Prussia, in the province of Hanover, at the confluence of the Geeste and Weser, separated by the Weser from Bremerhafen; pop. in 1871, 3,219. It was established by the government of Hanover as a rival of Bremerhafen, was made a free port in 1847, and in 1862 extensive harbor works were commenced. Since the annexation of Hanover to Prussia, Geestermunde has been made a station of a part of the German fleet. The place possesses some advantages, which will probably render it an important port.