Where does “Ruheenergie” come from?

Ruheenergie (German) comes from German rūhe, from Middle High German ruo, from Old High German ruowa, from Proto-West Germanic rōu, from Proto-Germanic *rōō, from Proto-Indo-European h₁reh₁- — to row; to separate; loose, sparse, rare.

Ruheenergie (German): rest energy

Definitions

  1. rest energy

Ancestry of “Ruheenergie”, step by step

Ruheenergie traces back through two separate lines of ancestry.

via German rūhe

StepLanguageWordMeaning
1Germanrūhecalm, relative quietness absence of loud sounds
2Middle High Germanruo
3Old High Germanruowapeace, quiet, rest
4Proto-West Germanicrōucalm, quiet; rest, repose
5Proto-Germanic*rōōcalm, quiet
6Proto-Indo-Europeanh₁reh₁-to row; to separate; loose, sparse, rare

via German Energie

StepLanguageWordMeaning
1GermanEnergieenergy
2Ancient Greekἐνέργειᾰactivity, operation, vigour, efficiency
Every word from Proto-Indo-European h₁reh₁-Every word from Proto-Germanic *rōōEvery word from Proto-West Germanic rōu