Where does “polttoarvo” come from?

polttoarvo (Finnish) comes from Finnish poltto, from Finnish polttaa, from Proto-Finnic polttadak, from Proto-Finnic paladak, from Proto-Uralic pala- — to devour, eat.

Ancestry of “polttoarvo”, step by step

polttoarvo traces back through two separate lines of ancestry.

via Finnish poltto

Step	Language	Word	Meaning
1	Finnish	poltto	burn, burning; burn; incineration
2	Finnish	polttaa	to burn; to burn, sunburn; to burn, waste
3	Proto-Finnic	polttadak	to burn
4	Proto-Finnic	paladak	to burn, to be burning
5	Proto-Uralic	pala-	to devour, eat

via Finnish Arvo

Step	Language	Word	Meaning
1	Finnish	Arvo	value, worth quality (positive or negative) that renders something desirable or valuable
2	Finnish	Arvi	—
3	Old Norse	Arnviðr	—
4	Proto-Germanic	Arôwiduz	—

Every word from Proto-Uralic pala- →Every word from Proto-Finnic paladak →Every word from Proto-Finnic polttadak →