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A historical region and former province of Prussia on the Baltic Sea in present-day Poland and Russia. From 1919 to 1939 it was separated from Germany by the Polish Corridor. After World War II the area was divided between Poland and the USSR.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Placename) a former province of NE Germany on the Baltic Sea: separated in 1919 from the rest of Germany by the Polish Corridor and Danzig: in 1945 Poland received the south part, the Soviet Union the north. German name: Ostpreussen
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a former province in NE Germany: separated from Germany by the Polish Corridor; now divided between Poland and the Russian Federation. Cap.: Königsberg.
East′ Prus′sian, adj., n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.