Longman Dictionary of Contemporary English homepage

Topic: INDUSTRY

Date: 1800-1900
Origin: John Loudon Macadam (1756-1836), Scottish engineer who invented it

macadam

 noun
     
ma‧cad‧am [uncountable]
TTRTI a road surface made of a mixture of broken stones and tar or asphalt [= tarmac British English]
Definition of macadam from the Longman Dictionary of Contemporary English within
the topic INDUSTRY
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