noun
a political movement for reformation within the Communist Party of the Soviet Union during the 1980s
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Perestroika was a political movement for reform in the Soviet Union in the late 1980s.
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My grandparents often talk about the changes brought about by perestroika.
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Perestroika was a game-changer for the Soviet Union.
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The company underwent a perestroika of its management structure to improve efficiency.