| Term | Definition |
| agglomeration | A process involving the clustering or concentrating of people or activities. The term often refers to manufacturing plants and businesses that benefit from close proximity because they share skilled-labor pools and technological and financial amenities. |
| disamenity sector | The very poorest parts of cities that in extreme cases are not even connected to regular city services and are controlled by gangs or drug lords. |
| megalopolis | Term used to designate large coalescing supercities that are forming in diverse parts of teh world. |
| zoning | Legal restrictions on land use that determine what types of building and economic activities are allowed to take place in certain areas. |