Where does “radicalis” come from?

radicalis (Latin) comes from Latin rādīx, from Proto-Italic wrādīks, from Proto-Indo-European wréh₂ds — root.

Ancestry of “radicalis”, step by step

Step	Language	Word	Meaning
1	Latin	rādīx	—
2	Proto-Italic	wrādīks	—
3	Proto-Indo-European	wréh₂ds	root

radicalis — Etymology, Origin & Word History | Etymology Explorer