DictionarymegalopolisLarge urban region
noun

megalopolis

meg-uh-LAH-puh-lis/ˌmeɡəˈlɑːpəlɪs/

A very large, densely populated urban region.

Three dense city centers and their surrounding development form one megalopolis.

Compact aerial isometric diagram-like illustration of enormous urban region: THREE distinct dense high-rise city cores connected by continuous belts of closely packed low buildings and roads.
Etymology

The Greek pieces mean “great city,” and the compound was used as an epithet for great cities in antiquity. Its modern sense emphasizes a vast, heavily populated urban complex.

In context

City Beautiful3:01
a megalopolis is a cluster of nearby metropolitan areas for example the northeast megalopolis is an area on the eastern seaboard of the united states that goes from boston down to washington
How big can cities get?

More examples

  • Millions of people travel across the megalopolis each day.
  • The coastal megalopolis stretches across several state lines.
  • Providing affordable housing is a challenge in many megalopolises.

Forms

megalopolis · megalopolises · megalopoleis

Similar words

metropolis
Usually names one major city rather than an entire urban region.
conurbation
Emphasizes neighboring cities merging into one continuously built-up area.