Where does “Jezkazgan” come from?

Jezkazgan (English) comes from Kazakh Жезқазған, from Kazakh жез, from Proto-Turkic *yeŕ.

Ancestry of “Jezkazgan”, step by step

StepLanguageWordMeaning
1KazakhЖезқазған—
2Kazakhжезbrass
3Proto-Turkic*yeŕ—
Every word from Proto-Turkic *yeŕ →Every word from Kazakh жез →Every word from Kazakh Жезқазған →