Where does “läpivalaista” come from?

läpivalaista (Finnish) comes from Finnish läpi, from Tagalog lapi, from Spanish lápiz, from Italian lapis, from Latin lapis, from Proto-Italic *lapets — stone.

läpivalaista (Finnish): to X-ray, penetrate with X-rays, scan

Definitions

to X-ray, penetrate with X-rays, scan

Ancestry of “läpivalaista”, step by step

läpivalaista traces back through two separate lines of ancestry.

via Finnish läpi

Step	Language	Word	Meaning
1	Finnish	läpi	hole window, shutter, door; mouth, hole; through
2	Tagalog	lapi	joining or attaching a part to a whole; affix
3	Spanish	lápiz	pencil
4	Italian	lapis	pencil; sanguine
5	Latin	lapis	a stone; a milestone; a boundary stone
6	Proto-Italic	*lapets	stone

via Finnish valaista

Step	Language	Word	Meaning
1	Finnish	valaista	to light, illuminate; to shed light on,...
2	Finnish	valo	light
3	Proto-Finnic	valo	light visible radiation
4	Proto-Finno-Ugric	waĺɜ	—

Every word from Proto-Italic *lapets →