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.

plural of petroleum

A pale yellow semisolid mixture of hydrocarbons obtained from petroleum; used in lubricants and ointments.

A substance, mostly carbon, that is a byproduct of oil refining; used as a fuel or in many industrial applications.

petroleum ether

petroleum ether / plural of petroleum spirit

A volatile petroleum fraction, usually available in a number of fractions boiling between 40°C and 140°C. Used as a solvent in the laboratory and industry.

plural of petroleum jelly

Helaeomyia petrolei, a Californian fly whose larvae feed on dead insects that become trapped in naturally occurring petroleum pools.

plural of petroleum fly