Where does “Айжүрек” come from?

Айжүрек (Kazakh) comes from Kazakh ай, from Proto-Turkic *āy — moon.

Ancestry of “Айжүрек”, step by step

Айжүрек traces back through two separate lines of ancestry.

via Kazakh ай

StepLanguageWordMeaning
1Kazakhайmoon; month
2Proto-Turkic*āymoon

via Kazakh жүрек

StepLanguageWordMeaning
1Kazakhжүрекheart
2Proto-Turkicyürekheart
Every word from Proto-Turkic *āy →Every word from Kazakh ай →