soviet union

/S OW1 V IY0 AH0 T Y UW1 N Y AH0 N/
noun
  1. 1

    (historical) A former transcontinental country in Europe and Asia (1922–1991), now split into Russia and 14 other countries. Official name: Union of Soviet Socialist Republics.

  2. 2

    (informal, historical, synecdochically) The Russian Soviet Federative Socialist Republic.

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