Where does “vaihtopiiri” come from?

vaihtopiiri (Finnish) comes from Finnish vaihto, from Finnish vaihtaa, from Proto-Finnic vaihtadak, from Proto-Finnic -tadak, from Proto-Uralic -ta- — Forms verbs from nouns; Forms causative verbs...

vaihtopiiri (Finnish): barter group, group of people who barter/exchange goods or services

Definitions

  1. barter group, group of people who barter/exchange goods or services

Ancestry of “vaihtopiiri”, step by step

vaihtopiiri traces back through two separate lines of ancestry.

via Finnish vaihto

StepLanguageWordMeaning
1Finnishvaihtoexchange; swap; shift key
2Finnishvaihtaato change, replace; to exchange, switch; to swap
3Proto-Finnicvaihtadakto change
4Proto-Finnic-tadakForms verbs from both nominal and verbal stems
5Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...

via Finnish piiri

StepLanguageWordMeaning
1Finnishpiiriring of people; administrative district, region;...
2Proto-Finnicpiiriline; border; ring, circle
3Proto-Uralicpirecircle
Every word from Proto-Uralic -ta-Every word from Proto-Finnic -tadakEvery word from Proto-Finnic vaihtadak