Where does “Grauwacke” come from?

Grauwacke (German) comes from German Grau, from Middle High German grā, from Old High German grāo, from Proto-Germanic grēwaz, from Proto-Indo-European ǵʰreh₁- — to become green, grow; to grow; to green, to grow.

Ancestry of “Grauwacke”, step by step

Grauwacke traces back through two separate lines of ancestry.

via German Grau

StepLanguageWordMeaning
1GermanGraugrey
2Middle High Germangrā—
3Old High Germangrāogrey
4Proto-Germanicgrēwazgrey
5Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow

via German wacke

StepLanguageWordMeaning
1Germanwackeboulder
2Middle High Germanwackeboulder
3Old High Germanwaggo—

Words derived from “Grauwacke”

Every word from Proto-Indo-European ǵʰreh₁- →Every word from Proto-Germanic grēwaz →Every word from Old High German grāo →