Where does “suunnanvaihtokytkin” come from?

suunnanvaihtokytkin (Finnish) comes from Finnish suunnanvaihto, 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...

suunnanvaihtokytkin (Finnish): reverse switch, reversing switch

Definitions

  1. reverse switch, reversing switch

Ancestry of “suunnanvaihtokytkin”, step by step

suunnanvaihtokytkin traces back through two separate lines of ancestry.

via Finnish suunnanvaihto

StepLanguageWordMeaning
1Finnishsuunnanvaihtochange of direction, reversal
2Finnishvaihtoexchange; swap; shift key
3Finnishvaihtaato change, replace; to exchange, switch; to swap
4Proto-Finnicvaihtadakto change
5Proto-Finnic-tadakForms verbs from both nominal and verbal stems
6Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...

via Finnish kytkin

StepLanguageWordMeaning
1Finnishkytkinswitch; clutch; First-person singular indicative...
2Finnishkytkeäto hook, hook up, connect, couple; "~ irti" = to...
3Proto-Finnickütkedäkto bind, to tie
4Proto-Uralickütke-to bind
Every word from Proto-Uralic -ta-Every word from Proto-Finnic -tadakEvery word from Proto-Finnic vaihtadak