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petroleum |
Also found in: Encyclopedia, Wikipedia, Hutchinson | 0.02 sec. |
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petroleum /pe·tro·le·um/ (pĕ-tro´le-um) a thick natural mixture of gaseous, liquid, and solid hydrocarbons obtained from beneath the surface of the earth. petroleum benzin a colorless, volatile, flammable fraction from petroleum distillation, containing largely hydrocarbons of the methane series; it has been variously described as a special grade of ligroin or as a separate but similar fraction with a lower boiling range. It is used chiefly as an extractive solvent. petroleum a thick natural oil obtained from beneath the earth. It consists of a mixture of various hydrocarbons of the paraffin and olefin series. See crude petroleum oil. petroleum jelly petrolatum. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Rupp valiantly defends this early history in his letter, with reference to programs a hundred years ago, when contemporary pesticides and biological and cultural controls did not exist and the tools of mosquito control were limited to such measures as deep-ditch draining of wetlands in New Jersey, clear-cutting, and use of arsenic compounds and crude petroleum for larval control. Although stopping short of saying he would push county officials to ask for a larger sum from Mobil, Ross said he was disappointed the company offered so little after pumping what he believes to be hundreds of millions of dollars of crude petroleum from the ocean floor. From 1990 to 1995, worldwide primary energy demand increased approximately 9 per cent, reaching over 8 billion metric tons of oil; world consumption of crude petroleum exceeded production by more than 40 million tons in 1995; among primary energy sources, consumption of natural gas showed the largest increase of 18 per cent between 1990 and 1995; and China's consumption of electricity increased more than 60 per cent from 1990, reaching 1,007 billion kilowatt hours in 1995. |
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