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asphalt
asphalt , brownish-black substance used commonly in road making, roofing, and waterproofing. Chemically, it is a natural mixture of hydrocarbons. It varies in consistency from a solid to a semisolid, has great tenacity, melts when heated, and when ignited will burn with a smoky flame leaving very little or no ash. It is found in nature in deposits called asphalt lakes. Natural asphalt was probably formed by the evaporation of petroleum. Asphalt is obtained as a residue in the distillation or refining of petroleum. This is its important commercial source. It occurs also in asphalt rock, a natural mixture of asphalt with sand and limestone, which when crushed is used as road-building material. Asphalt is also used in the manufacture of paints and varnishes, giving an intensely black color. |
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"asphalt." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "asphalt." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1E1-asphalt.html "asphalt." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-asphalt.html |
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asphalt
as·phalt / ˈasfôlt/ • n. a mixture of dark bituminous pitch with sand or gravel, used for surfacing roads, flooring, roofing, etc. ∎ the pitch used in this mixture, sometimes found in natural deposits but usually made by the distillation of crude oil. • v. [tr.] cover with asphalt. DERIVATIVES: as·phal·tic / asˈfôltik/ adj. |
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"asphalt." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "asphalt." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O999-asphalt.html "asphalt." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-asphalt.html |
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asphalt
asphalt Brown or black, solid or semi-solid, bituminous substance made almost entirely of carbon and hydrogen. It melts between 65 and 95°C and is soluble in carbon disulphide. It is formed by the evaporation of volatile hydrocarbons and occurs in oilbearing rocks, e.g. in Trinidad, or as a residue from petroleum refining.
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AILSA ALLABY and MICHAEL ALLABY. "asphalt." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "asphalt." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O13-asphalt.html AILSA ALLABY and MICHAEL ALLABY. "asphalt." A Dictionary of Earth Sciences. 1999. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-asphalt.html |
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asphalt
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"asphalt." World Encyclopedia. 2005. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "asphalt." World Encyclopedia. 2005. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O142-asphalt.html "asphalt." World Encyclopedia. 2005. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-asphalt.html |
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asphalt
asphalt XIV. Early forms aspalt(oun), ult. — late L. asphalton, -um — Gr. ásphalton, -os; later asphalt(e) reproduces the F. asphalte.
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T. F. HOAD. "asphalt." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "asphalt." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O27-asphalt.html T. F. HOAD. "asphalt." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-asphalt.html |
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asphalt
asphalt
•gestalt • asphalt
•belt, Celt, dealt, dwelt, felt, gelt, knelt, melt, misdealt, pelt, Scheldt, smelt, spelt, svelte, veld, welt
•fan belt • seat belt • lifebelt • sunbelt
•rust belt • Copperbelt • heartfelt
•underfelt • backveld • bushveld
•Roosevelt
•atilt, built, gilt, guilt, hilt, jilt, kilt, lilt, quilt, silt, spilt, stilt, tilt, upbuilt, wilt
•Vanderbilt • volte
•assault, Balt, exalt, fault, halt, malt, salt, smalt, vault
•cobalt • stringhalt • basalt
•somersault • polevault
•bolt, colt, dolt, holt, jolt, moult (US molt), poult, smolt, volt
•deadbolt • Humboldt • thunderbolt
•megavolt • spoilt • Iseult
•consult, cult, exult, indult, insult, penult, result, ult
•adult • occult • tumult • catapult
•difficult • Hasselt
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"asphalt." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "asphalt." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O233-asphalt.html "asphalt." Oxford Dictionary of Rhymes. 2007. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-asphalt.html |
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