Where does “Mross” come from?

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

Ancestry of “Mross”, step by step

Mross traces back through two separate lines of ancestry.

via Polish Mróz

StepLanguageWordMeaning
1PolishMrózfreeze, frost
2Proto-Slavicmòrzъfrost

via Lower Sorbian mroz

StepLanguageWordMeaning
1Lower Sorbianmrozfrost
Every word from Proto-Slavic mòrzъEvery word from Polish Mróz
Mross — Etymology, Origin & Word History | Etymology Explorer