Where does “petrolífer” come from?

petrolífer (Catalan) comes from Catalan petroli, from Latin petroleum, from Latin oleum, from Ancient Greek ἔλαιον, from Ancient Greek ἐλαία, from Proto-Hellenic elaíwā, from Proto-Indo-European loiwom.

petrolífer (Catalan): petroliferous containing petroleum

Definitions

petroliferous containing petroleum

Ancestry of “petrolífer”, step by step

Step	Language	Word	Meaning
1	Catalan	petroli	petroleum
2	Latin	petroleum	petroleum
3	Latin	oleum	olive oil; the palaestra
4	Ancient Greek	ἔλαιον	olive oil, commonly used as an anointing oil; any...
5	Ancient Greek	ἐλαία	olive tree; olive; naevus
6	Proto-Hellenic	elaíwā	—
7	Proto-Indo-European	loiwom	—

Every word from Proto-Indo-European loiwom →Every word from Proto-Hellenic elaíwā →Every word from Ancient Greek ἐλαία →