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petrol

petrol (gasoline) Major hydrocarbon fuel, a mixture consisting mainly of hexane, octane and heptane. One of the products of oil refining, petrol is extracted from crude oil (petroleum). Most modern cars have high-compression internal combustion engines, and the mixture of air and petrol vapour supplied to it can explode too quickly, pushing against a rising instead of a descending piston. This effect is known as engine knock, and to eliminate it many petrol manufacturers add lead(IV) tetraethyl to slow the rate of combustion. However, this additive has been found to be implicated in atmospheric pollution and causes brain damage, and so many manufacturers omit the additive and instead improve the octane number of the petrol by altering the mixture of hydrocarbons.

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"petrol." World Encyclopedia. . Encyclopedia.com. 25 Jun. 2017 <http://www.encyclopedia.com>.

"petrol." World Encyclopedia. . Encyclopedia.com. (June 25, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/petrol

"petrol." World Encyclopedia. . Retrieved June 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/petrol

petrol

petrol †petroleum XVI; refined petroleum used in internal combustion engines XIX. — F. pétrole — medL. petroleum; see next.

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"petrol." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 25 Jun. 2017 <http://www.encyclopedia.com>.

"petrol." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (June 25, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-2

"petrol." The Concise Oxford Dictionary of English Etymology. . Retrieved June 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-2

petrol

pet·rol / ˈpetrəl/ • n. British term for gasoline.

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"petrol." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 25 Jun. 2017 <http://www.encyclopedia.com>.

"petrol." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (June 25, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-1

"petrol." The Oxford Pocket Dictionary of Current English. . Retrieved June 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-1

petrol

petrol: see gasoline.

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"petrol." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 25 Jun. 2017 <http://www.encyclopedia.com>.

"petrol." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (June 25, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/petrol

"petrol." The Columbia Encyclopedia, 6th ed.. . Retrieved June 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/petrol

petrol

petrolapparel, barrel, carol, Carole, carrel, Carroll, Darrell, Darryl, Farrell •gambrel • spandrel •astral, plastral •cracker-barrel •Errol, feral •petrel, petrol •spectral •central, epicentral, ventral •ancestral, kestrel, orchestral •dextral • Sacheverell • mayoral •sacral • wastrel • cerebral •anhedral, cathedral, dihedral, tetrahedral •hypaethral (US hypethral), urethral •squirrel, Tyrol, Wirral •timbrel, whimbrel •minstrel • arbitral • sinistral • integral •triumviral •spiral, viral •amoral, Balmoral, coral, immoral, laurel, moral, quarrel, sorel, sorrel •cockerel, Cockerell •dotterel • rostral •aboral, aural, choral, floral, goral, oral •austral, claustral •scoundrel • cloistral • neutral • figural •augural •demurral, Durrell •mongrel • sepulchral • lustral •spheral • retiral •crural, jural, mural, neural, plural, rural •illiberal, liberal •natural • federal • peripheral •doggerel • mackerel • pickerel •bicameral, unicameral •admiral •ephemeral, femoral •humeral, numeral •general • mineral • funeral •spatio-temporal, temporal •corporal • tesseral • visceral •bilateral, collateral, equilateral, lateral, multilateral, quadrilateral, trilateral, unilateral •pastoral •electoral, pectoral, prefectoral, protectoral •clitoral, literal, littoral, presbyteral •dipteral, peripteral •doctoral • several • behavioural •conferral, deferral, referral, transferral

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"petrol." Oxford Dictionary of Rhymes. . Encyclopedia.com. 25 Jun. 2017 <http://www.encyclopedia.com>.

"petrol." Oxford Dictionary of Rhymes. . Encyclopedia.com. (June 25, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-0

"petrol." Oxford Dictionary of Rhymes. . Retrieved June 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/petrol-0