Meaning & use
macadam
Last updated
A road surface made of layers of compacted small broken stones, often bound with tar or asphalt.
See it in a sentence
The old country lane was still paved with macadam rather than modern asphalt.
Engineers studied how macadam roads held up under heavy traffic in the 1800s.
A note on using this word
Macadam is named after Scottish engineer John Loudon McAdam, who invented this road-building method in the early nineteenth century.
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