Drilling for oil underground.
Petroleum is an oily mixture of hydrocarbons that can be extracted from layers of rock and used to produce fuel.
The hydrocarbons in rock strata that are used to produce the gas in your car are an example of petroleum.
an oily, flammable, liquid solution of hydrocarbons, yellowish-green to black in color, occurring naturally in the rock strata of certain geological formations: when fractionally distilled, it yields paraffin, fuel oil, kerosene, gasoline, etc.
Origin of petroleumMedieval Latin ; from Classical Latin petra, rock (; from Gr) + oleum, oil
A thick, flammable, yellow-to-black mixture of gaseous, liquid, and solid hydrocarbons that occurs naturally beneath the earth's surface, can be separated into fractions including natural gas, gasoline, naphtha, kerosene, fuel and lubricating oils, paraffin wax, and asphalt and is used as raw material for a wide variety of derivative products.
Origin of petroleumMiddle English, from Medieval Latin petr&omacron;leum : Latin petra, rock; see petrous + Latin &omacron;leum, oil; see oil.
(plural petroleums or petrolea)
- A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.