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asphalt

[as-fawlt or, esp. British, -falt] /ˈæs fɔlt or, esp. British, -fælt/
noun
1.
any of various dark-colored, solid, bituminous substances, native in various areas of the earth and composed mainly of hydrocarbon mixtures.
2.
a similar substance that is the by-product of petroleum-cracking operations.
3.
a mixture of such substances with gravel, crushed rock, or the like, used for paving.
verb (used with object)
4.
to cover or pave with asphalt.
adjective
5.
of, pertaining to, or containing asphalt:
asphalt tile.
Origin
1275-1325
1275-1325; earlier asphaltos, -um < Latin < Greek ásphaltos, -on, akin to asphalízein to make firm, to secure; replacing Middle English aspaltounGreek ásphalton
Related forms
asphaltic, adjective
asphaltlike, adjective
unasphalted, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for asphalt
  • For his part, the mayor says asphalt pavements are more expensive to maintain than brick.
  • With the concave shape of the asphalt lanes, the path of the ball can be unpredictable.
  • Also use roofing nails to attach asphalt shingles, working up from the roof's bottom end.
  • Roads have the same asphalt and gully covers as decades ago.
  • Copy the lines in the paper square onto the asphalt square with the chalk.
  • There are only a few paved roads, but asphalt crews are laying down new ones every day.
  • Pavers are a great alternative to traditional hardscape materials such as concrete or asphalt.
  • First, the truck was on asphalt and it was pulling some concrete barriers on asphalt.
  • asphalt roofing tile and asphalt paving material come from the same place: the bottom of the oil barrel.
  • No one has ever filmed the inside of a tornado-where wind can chew asphalt off a road and drive wooden splinters into tree trunks.
British Dictionary definitions for asphalt

asphalt

/ˈæsfælt; ˈæʃ-; -fɔːlt/
noun
1.
any of several black semisolid substances composed of bitumen and inert mineral matter. They occur naturally in parts of America and as a residue from petroleum distillation: used as a waterproofing material and in paints, dielectrics, and fungicides
2.
a mixture of this substance with gravel, used in road-surfacing and roofing materials
3.
(modifier) containing or surfaced with asphalt
verb
4.
(transitive) to cover with asphalt
Derived Forms
asphaltic, adjective
Word Origin
C14: from Late Latin aspaltus, from Greek asphaltos, probably from a-1 + sphallein to cause to fall; referring to its use as a binding agent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for asphalt
n.

early 14c., "hard, resinous mineral pitch found originally in Biblical lands," from Late Latin asphaltum, from Greek asphaltos "asphalt, bitumen," probably from a non-Greek source, possibly Semitic [Klein, citing Lewy, 1895]. Another theory holds it to be from Greek a- "not" + *sphaltos "able to be thrown down," taken as verbal adjective of sphallein "to throw down," in reference to a use of the material in building.

Meaning "paving composition" dates from 1847 and its popular use in this sense established the modern form of the English word, mostly displacing asphaltum, asphaltos. As a verb meaning "to cover with asphalt," from 1872.

Online Etymology Dictionary, © 2010 Douglas Harper
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asphalt in Science
asphalt
  (ās'fôlt')   
A thick, sticky, dark-brown mixture of petroleum tars used in paving, roofing, and waterproofing. Asphalt is produced as a byproduct in refining petroleum or is found in natural beds.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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