Where does “altistuma” come from?

altistuma (Finnish) comes from Finnish altistua, from Finnish altistaa, from Finnish altis, from Proto-Germanic aldaz, from Proto-Indo-European h₂eltós, from Proto-Indo-European h₂él- — to grow, nourish.

altistuma (Finnish): exposure, especially to a harmful substance

Definitions

exposure, especially to a harmful substance

Ancestry of “altistuma”, step by step

altistuma traces back through two separate lines of ancestry.

via Finnish altistua

Step	Language	Word	Meaning
1	Finnish	altistua	to be exposed
2	Finnish	altistaa	To expose; To endanger; To predispose
3	Finnish	altis	exposed, endangered, vulnerable; ready, inclined,...
4	Proto-Germanic	aldaz	old, grown up
5	Proto-Indo-European	h₂eltós	—
6	Proto-Indo-European	h₂él-	to grow, nourish

via Finnish mä

Step	Language	Word	Meaning
1	Finnish	mä	I
2	Finnish	minä	I; ego; self
3	Proto-Finnic	minä	I, me
4	Uralic	*minä	—

Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂eltós →Every word from Proto-Germanic aldaz →