Which term refers to a type of city characterized by the merging of multiple urban areas?

The term "conurbation" specifically describes an extended urban area that results from the merging of several towns or cities, often through the process of urban sprawl. This phenomenon is marked by a continuous built-up environment without substantial gaps in between, as neighboring urban areas grow and connect due to factors such as population growth, economic development, and infrastructure expansion. Conurbations typically have complex transportation networks and interdependencies between the merged urban areas.

While "megalopolis" also refers to a large, sprawling urban region made up of multiple interconnected cities, it is usually used to describe a more extensive or influential aggregation of metropolitan areas. "Neighbourhood unit" pertains to a concept aimed at planning smaller, self-sufficient communities within larger urban frameworks, and "Intramuros" references the historic walled city in Manila, which is not related to the merging of urban areas. Hence, "conurbation" is the most accurate term to describe the merging of multiple urban areas.