Where does “Mroz” come from?

Mroz (English) comes from Polish Mróz, from Proto-Slavic mòrzъ — frost.

Ancestry of “Mroz”, step by step

StepLanguageWordMeaning
1PolishMrózfreeze, frost
2Proto-Slavicmòrzъfrost
Every word from Proto-Slavic mòrzъ →Every word from Polish Mróz →