Where does “Frost” come from?

Frost (English) comes from Middle English frost, from Old English frost, from Proto-Indo-European prustós — frost.

Frost (English): A cover of minute ice crystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing

Definitions

  1. A cover of minute ice crystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing

Ancestry of “Frost”, step by step

Frost traces back through two separate lines of ancestry.

via Middle English frost

StepLanguageWordMeaning
1Middle EnglishfrostCold, freezing, or frosty weather; weather that...
2Old Englishfrostproduced by metathesis
3Proto-Indo-Europeanprustósfrost

via Proto-Germanic frustaz

StepLanguageWordMeaning
1Proto-Germanicfrustazcold; frost; freezing weather; frost; rime

Words derived from “Frost

Every word from Proto-Indo-European prustós