Where does “permanens” come from?

permanens (Latin) comes from Latin permaneo, from Latin per-, from Proto-Italic peri-.

Ancestry of “permanens”, step by step

Step	Language	Word	Meaning
1	Latin	permaneo	I stay to the end, hold out, endure; last,...
2	Latin	per-	Used to make adjectives or verbs that are "very"...
3	Proto-Italic	peri-	—

permanens — Etymology, Origin & Word History | Etymology Explorer