(historical) A republic within the former Union of Soviet Socialist Republics; a list of these can be found at Soviet Socialist Republic.

One of the 15 Soviet Socialist Republics that made up the former Soviet Union (1920-1991, name changed in 1990). Became independent as the Republic of Armenia in 1991, after the collapse of the USSR.

Prior to the formation of the Soviet Union

(historical, government) Any of the republics belonging to the former Soviet Union.

Synonym of former USSR

(historical) A nation in Eurasia that existed from December 30, 1922 to December 26, 1991.

The Bolshevik state of Ukraine (1919–91), a constituent republic of the Soviet Union (1922–91).

(historical, Soviet Union) a type of administrative unit created for certain nations, which had a status lower than the union republics of the Soviet Union, but higher than the autonomous oblasts and the autonomous okrugs

Synonym of Armenian SSR

The name for the Republic of Kyrgyzstan while a member of the Union of Soviet Socialist Republics (1924-1991).