Glasnost (Russian: гла́сность, literally: Publicity) was a policy that called for increased openness and transparency in government institutions and activities in the Soviet Union. Introduced by Mikhail Gorbachev in the second half of the 1980s, Glasnost is often paired with Perestroika (literally: Restructuring), another reform instituted by Gorbachev at the same time. The word "glasnost" has been used in Russian at least since the end of the 18th century.
The word was frequently used by Gorbachev to specify the policies he believed might help reduce the corruption at the top of the Communist Party and the Soviet government, and moderate the abuse of administrative power in the Central Committee. Russian human rights activist and dissident Lyudmila Alexeyeva explained glasnost as a word that "had been in the Russian language for centuries. It was in the dictionaries and lawbooks as long as there had been dictionaries and lawbooks. It was an ordinary, hardworking, nondescript word that was used to refer to a process, any process of justice of governance, being conducted in the open."
Glasnost can also refer to the specific period in the history of the USSR during the 1980s when there was less censorship and greater freedom of information.
Read more about Glasnost: Areas of Concern