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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from French (essence de) pétrole, from Medieval Latin petroleum, from Ancient Greek πετρέλαιον (petrélaion, “oil of the rock”), from πέτρα (pétra, “stone, rock”)+ ἔλαιον (élaion, “olive oil, any oily substance”). Doublet of petroleum.
gasoline, gasolene, gas
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Classic usage
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