Definition of

Macadam

  1. (noun, substance) broken stone used in macadamized roadways
  2. (noun, artifact) a paved surface having compressed layers of broken rocks held together with tar

via WordNet, Princeton University

Synonyms of Macadam

tarmac, tarmacadam

Alternate forms of Macadam

Derivations: macadamize

Hypernyms: paved surface, pavement, paving, paving material

Origin of the word Macadam

  1. 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 … more

via Online Etymology Dictionary, ©2001 Douglas Harper

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