What does asphalt mean?
Asphalt is a dark, viscous mixture of bitumen—a sticky petroleum residue—combined with sand, gravel, or crushed stone. It is the dominant material for paving roads, driveways, car parks, and airport runways because it can be laid hot, compacted smoothly, and reused through recycling. The word also refers to natural deposits of bitumen found in rock, such as the famous Pitch Lake in Trinidad, which supplied much of Europe's early road-building material. Asphalt carries strong urban associations: the metaphorical 'asphalt jungle' evokes the harshness of city life. Figuratively, it can suggest heat, grit, and the endless grey surfaces of modern infrastructure. Related forms include the adjective 'asphaltic', describing materials containing asphalt. Though sometimes confused with cement or concrete, asphalt is distinct in both composition and appearance, being characteristically black rather than grey.
nounA black, sticky substance made from bitumen mixed with crushed stone or sand, used for surfacing roads, driveways and pavements.
- A mixture of bitumen with sand or gravel, used for paving roads and other surfaces.
- The naturally occurring dark bituminous substance found in rock deposits.
"The summer heat softened the asphalt on the highway until tyres left faint imprints in it."
"Workers resurfaced the parking lot with fresh asphalt over the weekend."
"Natural asphalt was quarried from the Trinidad Pitch Lake for use in early road construction."
The plural is rare and typically appears only in technical or geological writing referring to different types or sources of asphalt.
"The survey compared asphalts from several petroleum refineries."
The phrase 'urban jungle' was popularised as 'the asphalt jungle' by a 1949 film noir about crime in New York City.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of asphalt
The word 'asphalt' derives from the Greek 'ásphaltos', meaning bitumen or pitch, which itself appears to combine the prefix 'a-' with 'sphállein', meaning 'to cause to fall'—possibly alluding to the substance's slippery nature or the way it causes things to sink. It entered English via Latin 'asphaltum' in the early seventeenth century, when natural bitumen deposits were becoming commercially significant. A distant relative within English is the mineral name 'sphalerite', which shares the same Greek root relating to slipping or deception.
Related word forms
How asphalt is actually used
Asphalt is primarily a technical and everyday noun referring to road surfaces; it is occasionally used as a verb meaning to pave with asphalt, though this usage is uncommon. In British English, 'tarmac' is often used informally where Americans say 'asphalt' or 'blacktop', even though tarmac is technically a trademarked material of different composition.
Easily confused with asphalt
Cement is the grey powder that binds concrete, whereas asphalt is the black petroleum-based mixture used to pave roads.