noun. 1. the popularity toward residing in cities, that are defined by the U.S. Bureau of the Census as having populaces of fifty thousand or more people. 2. the undertaking of becoming a community with urban traits.
noun. 1. the popularity toward residing in cities, that are defined by the U.S. Bureau of the Census as having populaces of fifty thousand or more people. 2. the undertaking of becoming a community with urban traits.