Where does “strongroom” come from?

strongroom (English) comes from English strong, from Middle English strong, from Old English strang, from Proto-West Germanic strang, from Proto-Germanic strangaz, from Proto-Indo-European strengʰ-, from Proto-Indo-European ster- — sterile, infertile.

strongroom (English): A strongly built room or vault where valuables...

Definitions

  1. A strongly built room or vault where valuables...

Ancestry of “strongroom”, step by step

strongroom traces back through two separate lines of ancestry.

via English strong

StepLanguageWordMeaning
1EnglishstrongCapable of producing great physical force;...
2Middle Englishstrongstrong; Alternative form of straunge
3Old Englishstrangstrong
4Proto-West Germanicstrangsevere, strict, rigorous; strong
5Proto-Germanicstrangaztight, strict, straight; strong
6Proto-Indo-Europeanstrengʰ-to twist; rope, cord
7Proto-Indo-Europeanster-sterile, infertile

via English room

StepLanguageWordMeaning
1EnglishroomOpportunity or scope; Space "for" something, or...
2Middle EnglishroumA space or area; A room
3Old Englishrūmroom, space; roomy, spacious, ample, extensive,...
4Proto-West Germanicrūmroomy, spacious; room, open space
5Proto-Germanicrūmazroomy, spacious, open
6Proto-Indo-Europeanrewh₁-free space
Every word from Proto-Indo-European ster-Every word from Proto-Indo-European strengʰ-Every word from Proto-Germanic strangaz