What does macadamizing mean?
“Macadamizing” means paving a road with macadam, a durable surface made from compacted broken stone held together with tar or another bituminous binder. The word is now chiefly historical or associated with North American road construction, where it was especially common during the nineteenth and early twentieth centuries. It may refer either to the complete process of preparing and laying the macadam surface or, more narrowly, to applying a tarred macadam coating to an existing road. In contemporary British English, “tarring” is the usual equivalent term. The word is also of interest because it derives from the name of Scottish engineer John Loudon McAdam, whose methods of building durable, drained roads influenced later highway engineering. Although ordinary speakers now often use the broader terms “paving” or “surfacing,” “macadamizing” preserves a specific technical and historical tradition in road building.
verbTo cover a road surface with macadam, typically compacted broken stone bound together by tar or another bituminous material.
- To surface a road with macadam.
"The crew spent the summer macadamizing the road beyond the village."
"Macadamizing the mountain road proved more economical than laying concrete."
"The old photographs show workers macadamizing the highway with heavy rollers."
“Macadamizing” preserves the name of Scottish road engineer John Loudon McAdam in the vocabulary of American road building.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does macadamizing come from?
The word derives from the surname of Scottish engineer John Loudon McAdam. His name became attached first to the crushed-stone road surface called macadam and later to the process of applying such a surface, macadamizing. The verb ultimately developed through the English forms “macadamize” and “macadamized,” with the present participle “macadamizing” retaining the stress pattern associated with “macadam.”
Related word forms
How macadamizing is actually used
The term is chiefly North American and is now uncommon in everyday speech, though it remains recognizable in historical and civil-engineering contexts. The corresponding British term is usually “tarring.”