Where does “kierukkavaihde” come from?

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

kierukkavaihde (Finnish): worm gear, worm gearbox

Definitions

  1. worm gear, worm gearbox

Ancestry of “kierukkavaihde”, step by step

kierukkavaihde traces back through two separate lines of ancestry.

via Finnish vaihde

StepLanguageWordMeaning
1Finnishvaihdegear; switch; turn
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 kierukka

StepLanguageWordMeaning
1Finnishkierukkacoil; scroll
2Finnishkierätoo twisted
3Proto-Finnickeerätwisted
4Proto-Uralickerä—
Every word from Proto-Uralic -ta- →Every word from Proto-Finnic -tadak →Every word from Proto-Finnic vaihtadak →