Where does “vaihtovalo” come from?

vaihtovalo (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...

vaihtovalo (Finnish): a light indicating that something should be replaced or changed

Definitions

  1. a light indicating that something should be replaced or changed

Ancestry of “vaihtovalo”, step by step

vaihtovalo 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 valo

StepLanguageWordMeaning
1Finnishvalolight
2Proto-Finnicvalolight visible radiation
3Proto-Finno-Ugricwaĺɜ
Every word from Proto-Uralic -ta-Every word from Proto-Finnic -tadakEvery word from Proto-Finnic vaihtadak