Where does “led-valo” come from?

led-valo (Finnish) comes from Finnish valo, from Proto-Finnic valo, from Proto-Finno-Ugric waĺɜ.

Ancestry of “led-valo”, step by step

led-valo traces back through two separate lines of ancestry.

via Finnish valo

StepLanguageWordMeaning
1Finnishvalolight
2Proto-Finnicvalolight visible radiation
3Proto-Finno-Ugricwaĺɜ—

via Finnish LED

StepLanguageWordMeaning
1FinnishLEDchiefly used as a modifier in compound terms
Every word from Proto-Finno-Ugric waĺɜ →Every word from Proto-Finnic valo →Every word from Finnish valo →