This is the 12371st most frequent Polish word.
mróz
Frost or freezing cold.
In this sentence, 'mróz' is used as a noun referring to frost or freezing cold weather conditions.
Mróz dzisiaj jest bardzo silny.
The frost today is very strong.
Here, 'mrozu' is the genitive singular form of the noun 'mróz', used to indicate the context or time when frost occurs.
Podczas mrozu musimy się ciepło ubierać.
During frost, we need to dress warmly.
In this sentence, 'mróz' indicates the phenomenon responsible for the patterns formed due to freezing conditions on glass surfaces.