Where does “porrashuone” come from?

porrashuone (Finnish) comes from Finnish porras, from Proto-Finnic pordas, from Proto-Germanic bordaz, from Proto-Germanic burdą, from Proto-Indo-European bʰers- — top, tip, point.

Ancestry of “porrashuone”, step by step

porrashuone traces back through two separate lines of ancestry.

via Finnish porras

StepLanguageWordMeaning
1Finnishporrasstep, stair
2Proto-Finnicpordasstair, step
3Proto-Germanicbordaz—
4Proto-Germanicburdąboard, plank; table
5Proto-Indo-Europeanbʰers-top, tip, point

via Finnish huone

StepLanguageWordMeaning
1Finnishhuoneroom; house; house, hall
2Proto-Finnichoonehbuilding; room
Every word from Proto-Indo-European bʰers- →Every word from Proto-Germanic burdą →Every word from Proto-Germanic bordaz →