Petroleum

Means ‘Stone oil` from the Latin petra oleum, an inflammable liquid varying in color (yellow-black), consisting mainly of hydrocarbons. Petroleum is found in sedimentary strata of the Earth`s crust.

Petroleum

Crude oil or any fraction thereof that is liquid under normal conditions of temperature and pressure. The term includes petroleum-based substances comprising a complex blend of hydrocarbons derived from crude oil through the process of separation, conversion, upgrading, and finishing, such as motor fuel, jet oil, lubricants, petroleum solvents, and used oil....

petroleum

a substance occurring naturally in the earth and composed mainly of mixtures of chemical compounds of carbon and hydrogen, with or without other nonmetallic elements such as sulfur, oxygen, and nitrogen. The compounds that compose it may be in the gaseous, liquid, or solid state, depending on their nature and on the existent conditions of temperature and pressure. ...

Petroleum

A generic term applied to oil and oil products in all forms, such as crude oil, lease condensate, unfinished oils, petroleum products, natural gas plant liquids, and non-hydrocarbon compounds blended into finished petroleum products. See crude oil.

petroleum

a generic name for hydrocarbons, including crude oil, natural gas liquids, natural gas and their products;

petroleum

Any of a group of naturally occurring substances made up of hydrocarbons. These substances may be gaseous, liquid, or semi-solid.
Found on http://www.encyclo.co.uk/local/22291

Petroleum

Petroleum (L. petroleum, from early 15c. `petroleum, rock oil` (mid-14c. in Anglo-French), from Medieval Latin petroleum, from Latin petra rock(see petrous) + oleum oil (see oil (n.)).) is a naturally occurring, yellow-to-black liquid found in geologic formations beneath the Earth`s surface, which is commonly refined into various types of fuels......
Found on http://en.wikipedia.org/wiki/Petroleum

Petroleum

• (n.) Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appe...
Found on http://thinkexist.com/dictionary/meaning/petroleum/

petroleum

(pә-tro´le-әm) a thick natural oil obtained from beneath the earth. It consists of a mixture of various hydrocarbons of the paraffin and olefin series.
Found on http://www.encyclo.co.uk/local/21001

petroleum

crude oil noun a dark oil consisting mainly of hydrocarbons
Found on https://www.encyclo.co.uk/local/20974

petroleum

Click images to enlargeNatural mineral oil, a thick greenish-brown flammable liquid found underground in permeable rocks. Petroleum consists of hydrocarbons mixed with oxygen, sulphur, nitrogen, and other elements in varying proportions. It is thought to be derived from ancient organic material that has been converted...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015289.html

Petroleum

Pe·tro'le·um noun [ New Latin , from Latin petra a rock + oleum oil: confer French pétrole . Confer Petrify , and Oil .] Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the ...
Found on http://www.encyclo.co.uk/webster/P/66

Petroleum

A broad category term that includes both crude oil and petroleum products, and is sometimes used interchangeably with the term ‘oil.’
Found on https://teeic.indianaffairs.gov/glossary/glossary.htm

petroleum

A general term including both oil and natural gas.
Found on https://www.encyclo.co.uk/local/22327

Petroleum

A generic name for hydrocarbons, including crude oil, natural gas liquids, natural gas and their products.
Found on http://www.oilandgasuk.co.uk/glossary.cfm

Petroleum

A group of liquid hydrocarbons that includes
Found on http://www.encyclo.co.uk/local/22392

petroleum

A naturally-occurring mixture of hydrocarbons, usually liquid 'crude oil,' but sometimes taken to include natural gas. Petroleum is believed to be formed from organic debris, chiefly of plankton and simple plants, which has been rapidly buried under marine conditions unfavorable to oxidation. After ...
Found on http://www.daviddarling.info/encyclopedia/P/petroleum.html

Petroleum

A sticky, oily, flammable liquid that is a complex mixture of organic compounds (mostly hydrocarbons) and other may vary in colour from nearly colourless to black. Basically, it is another word for crude oil. 'Petr' means something like 'rock' and 'oleum' means something like 'oil'.
Found on http://www.encyclo.co.uk/local/20046

Petroleum

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, fuel, lubricating oils and asphalt and is used as raw material for a wide variety of derivative products
Found on https://www.nmoga.org/glossary-of-terms

Petroleum

An oily, thick, flammable, usually dark coloured liquid that is a form of bitumen or a mixture of various hydrocarbons, occurring naturally in various parts of the world and often separated by distillation into petrol, naphtha, benzene, kerosene and paraffin.
Found on http://www.diracdelta.co.uk/science/source/p/e/petroleum/source.html

petroleum

complex mixture of hydrocarbons that occur in the Earth in liquid, gaseous, or solid forms. The term is often restricted to the liquid form, commonly ... [277 related articles]
Found on http://www.britannica.com/eb/a-z/p/51

Petroleum

crude oil (along with petroleum gas) occupying pore spaces in some sedimentary rocks. A valuable `fossil fuel”.
Found on https://www.geolsoc.org.uk/ks3/gsl/education/resources/rockcycle/page3451.h

Petroleum

Crude oil or any fraction thereof that is liquid under normal conditions of temperature and pressure. The term includes petroleum-based substances comprising a complex blend of hydrocarbons derived from crude oil through the process of separation, conversion, upgrading, and finishing, such as motor fuel, jet oil, lubricants, petroleum solvents, and...
Found on https://www.encyclo.co.uk/local/20094

petroleum

Generic name for hydrocarbons, including crude oil, NGLs, natural gas and their products.
Found on http://www.chemicalglossary.net/definition/1355-Petroleum

petroleum

petroleum A naturally occurring liquid mixture of complex hydrocarbon compounds that yields combustible fuels, petrochemicals, and lubricants upon distillation; usually found in deposits beneath the earth's surface and thought to have originated from plant and animal remains of the geologic past. It is by far the most widely used fuel source in the...
Found on http://www.wordinfo.info/words/index/info/view_unit/1457/3
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