Where does “undersnow” come from?

undersnow (English) comes from English snow, from Middle English snow, from Old English snāw, from Proto-West Germanic snaiw, from Proto-Germanic snaiwaz, from Proto-Indo-European snóygʷʰos, from Proto-Indo-European sneygʷʰ- — to snow.

undersnow (English): Beneath snow

Definitions

  1. Beneath snow

Ancestry of “undersnow”, step by step

undersnow traces back through two separate lines of ancestry.

via English snow

StepLanguageWordMeaning
1EnglishsnowThe frozen, crystalline state of water that falls...
2Middle Englishsnowsnow; snow-white; The temperature where snow...
3Old Englishsnāwsnow
4Proto-West Germanicsnaiwsnow
5Proto-Germanicsnaiwazsnow
6Proto-Indo-Europeansnóygʷʰossnow
7Proto-Indo-Europeansneygʷʰ-to snow

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European sneygʷʰ-Every word from Proto-Indo-European snóygʷʰosEvery word from Proto-Germanic snaiwaz