noun
a liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, diesel, and jet fuel
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Petroleum is a fossil fuel that is commonly used for energy production.
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My dad works in the petroleum industry, so he knows a lot about oil drilling.
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I heard that there's a huge stash of black gold, aka petroleum, just waiting to be found.
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Her creativity flowed like an endless well of petroleum, fueling her artistic endeavors.