1915, from Latin com- "with, together" (see com-) + urbs "city" + -ation. Coined by Scottish biologist and urban planner Patrick Geddes (1854-1932) in "Cities in Evolution.&qu [..]

the union of two or more urban areas into a continuous metropolitan area. Also called a megalopolis.

A large densely populated urban sprawl formed by the growth and coalescence of individual towns or cities. 

the fusion of growing metropolitan areas into a megalopolis. An intermediate stage in the development of what Lewis Mumford referred to as necropolis, an example of which is tenemented Rome around the time that the Western Empire fell. Necropolis is the final stage in decadence, bureaucratic alienation, hatred of life, and urban implosion.

large, effectively continuous urban area produced as urban sprawl leads formerly separate settlements to coalesce.

An area with more than one million people that is formed by the merger of two or more population centers and that meets other specified requirements. convection currents

An extensive urban area formed when two or more cities, originally separate, coalesce to form a continuous metropolitan region. Core Area:

(n) an aggregation or continuous network of urban communities

A population centre. There are twenty-four Route conurbations. We use the government’s definition to determine their limits. The conurbations do not cover the whole country, but instead cover the largest city areas.

a continuous aggregation of built-up urban communities created as a result of urban sprawl

An aggregation or continuous network of urban communities which have physically merged through population growth and expansion. It is a polycentric form of agglomeration (source - CEMAT (European Conf [..]

A group of towns with no gaps between them, so forming one continuous urban area.