Where does “tasopiirros” come from?

tasopiirros (Finnish) comes from Finnish piirros, from Finnish piirtää, from Finnish piiri, from Proto-Finnic piiri, from Proto-Uralic pire — circle.

Ancestry of “tasopiirros”, step by step

tasopiirros traces back through two separate lines of ancestry.

via Finnish piirros

StepLanguageWordMeaning
1Finnishpiirrosdrawing, sketch
2Finnishpiirtääto draw, sketch; to design, draft; to outline,...
3Finnishpiiriring of people; administrative district, region;...
4Proto-Finnicpiiriline; border; ring, circle
5Proto-Uralicpirecircle

via Finnish taso

StepLanguageWordMeaning
1Finnishtasolevel; standard; wing
2Finnishtasaof equal height; of the same level
3Proto-Finnictasaeven
4Proto-Uralictaśaeven
Every word from Proto-Uralic pireEvery word from Proto-Finnic piiriEvery word from Finnish piiri