macadam

[muh-kad-uhm]
noun
1.
a macadamized road or pavement.
2.
the broken stone used in making such a road.

Origin:
1815–25; named after J. L. McAdam (1756–1836), Scottish engineer who invented it

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To macadam
Collins
World English Dictionary
macadam (məˈkædəm)
 
n
a road surface made of compressed layers of small broken stones, esp one that is bound together with tar or asphalt
 
[C19: named after John McAdam (1756--1836), Scottish engineer, the inventor]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

macadam
1824, named for inventor, Scot. civil engineer John L. McAdam (1756-1836), who developed a method of leveling roads and paving them with gravel and outlined the process in his pamphlet "Remarks on the Present System of Road-Making" (1822). Originally, road material consisting of a solid mass of stones
of nearly uniform size laid down in layers; he did not approve of the use of binding materials or rollers. The idea of mixing tar with the gravel began 1880s. Verb macadamize is first recorded 1826.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
The place was at the end of a sloping driveway that started out as macadam but quickly diminished to dirt and gravel.
The macadam ran on straight and narrow, bisecting the spring-green wilderness of fronds.
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature