| Term | Definition |
| annexation | the process of legally adding land are to a city |
| census tract | an area that contains 5,000 residents and correspond where possible th neighborhood bundaries |
| concentric zone model | a city grows outward from a central area in a series of concentric rings, like the growth of rings on a tree |
| consolidated metropolitan statistical area | in the US 2 or more adjacent metropolitan areas with overlaooing commuting patterns |
| council of government | a cooperative agency consisting of representatives of local governments in a metropolitan area in the US |
| density gradient | the change in density in an urban area from the center to the periphery |
| edge city | a large node of office and retal activities on the edge of an urban area |
| filtering | a process of change in the use of a house, from single family owner occupancy to abandonment |
| gentrification | a process of converting an urban neighborhood from a predominantly low-income renter-occupied area to a predominantly middle-class owner-occupied area |