Definicija: Vsaka fizična razširitev ali spremembe pri uporabi zemlje v urbanih predelih, kar pogosto vključuje razdelitev na dele. Gradnja ali spremembe zgradb, cest, podjetij in drugih objektov, odstranitev dreves in drugih ovir ter rast prebivalstva in s tem povezane gospodarske, socialne in politične spremembe.

Definicija: Any physical extension of, or changes to, the uses of land in metropolitan areas, often involving subdivision into zones; construction or modification of buildings, roads, utilities and other facilities; removal of trees and other obstructions; and population growth and related economic, social and political changes.