Also means
petroleum
Usage Note
Petrolífero is a technical adjective meaning 'containing or producing petroleum': zona petrolífera ('oil-bearing zone'), yacimiento petrolífero ('oil field'). The feminine is petrolífera. It differs from petrolero (adjective: of oil industry; noun: oil tanker), which has a broader commercial sense.
Examples
"La región petrolífera atrae muchas inversiones."
Natural Translation
The oil-bearing region attracts a lot of investment.

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