verb (used with object), mac·ad·am·ized, mac·ad·am·iz·ing.

  1. to pave by laying and compacting successive layers of broken stone, often with asphalt or hot tar.


  1. (tr) to construct or surface (a road) with macadam

v.1826, from macadam + -ize. Related: Macadamized; macadamizing.

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