Where does “Гусиноозёрск” come from?

Гусиноозёрск (Russian) comes from Russian о́зеро, from Old East Slavic озеро, from Proto-Slavic ȅzero, from Proto-Balto-Slavic *éźeran — lake.

Ancestry of “Гусиноозёрск”, step by step

StepLanguageWordMeaning
1Russianо́зероlake
2Old East Slavicозероlake
3Proto-Slavicȅzerolake
4Proto-Balto-Slavic*éźeranlake
Every word from Proto-Balto-Slavic *éźeran →Every word from Proto-Slavic ȅzero →Every word from Old East Slavic озеро →