frost in English:

1. the cold weather conditions which allow a thin layer of powdery ice to form

English word "frost"(the cold weather conditions which allow a thin layer of powdery ice to form) occurs in sets:

Angielski vocab 3 rozdzial

2. small white ice crystals formed on the ground when the temperature falls below freezing

English word "frost"(small white ice crystals formed on the ground when the temperature falls below freezing) occurs in sets:

Activate B2! p18,20