Asphalt is the black, tarry material that's often used to pave roads or fill in potholes. Your neighbor might decide to coat his driveway in asphalt.

Asphalt is a popular substance for paving roads, parking lots, and even airport runways, because it's sturdy and easy to repair. When old asphalt roads are torn up or repaved, the asphalt can be reused in new highway or road projects. Asphalt is usually manufactured from oil, or petroleum, but there are more ecologically friendly ways to make it, including using molasses, rice, or potato starch.

Definitions of asphalt
  1. noun
    a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons
    synonyms: mineral pitch
    see moresee less
    type of:
    solid homogeneous inorganic substances occurring in nature having a definite chemical composition
  2. noun
    mixed asphalt and crushed gravel or sand; used especially for paving but also for roofing
    see moresee less
    type of:
    pavement, paving, paving material
    material used to pave an area
  3. verb
    cover with tar or asphalt
    asphalt the driveway”
    see moresee less
    type of:
    cover with a material such as stone or concrete to make suitable for vehicle traffic
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week