Where does “vaahtosammutus” come from?

vaahtosammutus (Finnish) comes from Finnish vaahto, from Proto-Finnic vakto, from Proto-Germanic þwahtuz, from Proto-Germanic -þuz, from Proto-Indo-European -tus — Derives action nouns from verb roots.

vaahtosammutus (Finnish): extinguishing a fire with foam

Definitions

  1. extinguishing a fire with foam

Ancestry of “vaahtosammutus”, step by step

vaahtosammutus traces back through two separate lines of ancestry.

via Finnish vaahto

StepLanguageWordMeaning
1Finnishvaahtofoam; head; mousse
2Proto-Finnicvaktofoam
3Proto-Germanicþwahtuzwashing, laundry
4Proto-Germanic-þuzForms result nouns from verb roots, usually from...
5Proto-Indo-European-tusDerives action nouns from verb roots

via Finnish sammutus

StepLanguageWordMeaning
1Finnishsammutusputting out a fire; fire fighting
2Finnishsammuttaato put out, extinguish; to quench, extinguish; to...
3Finnishsammuato go out, die (down) of fire
4Proto-Finnicsambudak—
Every word from Proto-Indo-European -tus →Every word from Proto-Germanic -þuz →Every word from Proto-Germanic þwahtuz →