Where does “Kraftraum” come from?

Kraftraum (German) comes from German kraft, from Middle High German kraft, from Old High German kraft, from Proto-West Germanic kraftu, from Proto-Germanic kraftuz, from Proto-Germanic -þuz, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Kraftraum (German): weights room a small, often private, gym used for muscle training

Definitions

  1. weights room a small, often private, gym used for muscle training

Ancestry of “Kraftraum”, step by step

Kraftraum traces back through two separate lines of ancestry.

via German kraft

StepLanguageWordMeaning
1Germankrafton the basis of; by virtue of; by means of,...
2Middle High Germankraft
3Old High Germankraft
4Proto-West Germanickraftustrength, power; skill
5Proto-Germanickraftuzstrength, power
6Proto-Germanic-þuzForms result nouns from verb roots, usually from...
7Proto-Indo-European-tusDerives action nouns from verb roots

via German raum

StepLanguageWordMeaning
1Germanraumwide; space
2Middle High Germanrūm
3Old High Germanrūm
4Proto-West Germanicrūmroomy, spacious; room, open space
5Proto-Germanicrūmazroomy, spacious, open
6Proto-Indo-Europeanrewh₁-free space
Every word from Proto-Indo-European -tusEvery word from Proto-Germanic -þuzEvery word from Proto-Germanic kraftuz