[per.e.stroi.ka] n [Russ perestroika, lit., restructuring] (1986): the policy of economic and governmental reform instituted by Mikhail Gorbachev in the Soviet Union during the mid-1980s
PERESTROIKA
Meaning of PERESTROIKA in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012