Where does “perolens” come from?

perolens (Latin) comes from Latin peroleo, from Latin oleō, from Proto-Italic oleō, from Proto-Indo-European h₂oléye-, from Proto-Indo-European h₂él- — to grow, nourish.

Definitions

Ancestry of “perolens”, step by step

Step	Language	Word	Meaning
1	Latin	peroleo	I emit a penetrating odor
2	Latin	oleō	—
3	Proto-Italic	oleō	to stoke a fire by burning a sacrifice
4	Proto-Indo-European	h₂oléye-	—
5	Proto-Indo-European	h₂él-	to grow, nourish

Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂oléye- →Every word from Proto-Italic oleō →