- The definition of asphalt is a black or brown, tar-like substance that is used to cover roadways and is usually mixed with gravel.
Blacktop on your driveway is an example of asphalt.
An asphalt parking lot.
asphalt definition by Webster's New World
- a brown or black, tarlike, bituminous substance that consists mainly of hydrocarbons, found in large flat beds or made by refining petroleum
- a mixture of this with sand or gravel, for cementing, paving, roofing, etc.
Origin: Midieval Latin asphaltus ; from Classical Greek asphaltos, probably ; from a-, not plush sphallein, to cause to fall, injure (; from Indo-European base an unverified form (s)p(h)el-, to split off from source spill): uncertain or unknown; perhaps so named because of use as protective substance for walls
- asphaltic adjective
asphalt definition by American Heritage Dictionary
- A brownish-black solid or semisolid mixture of bitumens obtained from native deposits or as a petroleum byproduct, used in paving, roofing, and waterproofing.
- Mixed asphalt and crushed stone gravel or sand, used for paving or roofing.
Origin: Middle English aspalt, from Medieval Latin asphaltus, from Greek asphaltos.
- as·phalˈtic adjective
asphalt - Science Definition