Where does “piirioja” come from?

piirioja (Finnish) comes from Finnish piiri, from Proto-Finnic piiri, from Proto-Uralic pire — circle.

piirioja (Finnish): edge drain; a drainage ditch that surrounds a plot of farmland

Definitions

  1. edge drain; a drainage ditch that surrounds a plot of farmland

Ancestry of “piirioja”, step by step

piirioja traces back through two separate lines of ancestry.

via Finnish piiri

StepLanguageWordMeaning
1Finnishpiiriring of people; administrative district, region;...
2Proto-Finnicpiiriline; border; ring, circle
3Proto-Uralicpirecircle

via Finnish oja

StepLanguageWordMeaning
1Finnishojaditch, trench; small natural brook
2Proto-Slavicojethill, shaft
3Proto-Indo-Europeanh₂oyHsos—
Every word from Proto-Uralic pire →Every word from Proto-Finnic piiri →Every word from Finnish piiri →