D. Harper. “Etymology of USSR.” Online Etymology Dictionary. https://www.etymonline.com/word/USSR (accessed $(datetime)).
updated on October 14, 2021
Definitions of USSR from WordNet
a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia and others); officially dissolved 31 December 1991;