Where does “Морозик” come from?

Морозик (Ukrainian) comes from Russian моро́з, from Old East Slavic морозъ, from Proto-Slavic mòrzъ — frost.

Ancestry of “Морозик”, step by step

StepLanguageWordMeaning
1Russianморо́зfreezing weather, frost
2Old East Slavicморозъfrost
3Proto-Slavicmòrzъfrost
Every word from Proto-Slavic mòrzъ →Every word from Old East Slavic морозъ →Every word from Russian моро́з →