megacity

plural megacities

1. A very large city; a megalopolis, typically one with population over 10 million.

   Why, for instance, do water users in a megacity like Lagos not pay an extra charge to get cesspits pumped out?

   2011 July 30, “Cholera and the super-loo”, in The Economist

   1 more example

   For the past four decades, the world’s fastest developing delta has been the Pearl River Delta (PRD) in the province of Guangdong in southern China. The delta area in the Pearl River has been transformed from a predominantly agricultural landscape into one of the world’s largest metropolitan areas, encompassing such megacities as Guangzhou, Dongguan, Shenzhen, Zhuhai, and Hong Kong (Fig. 1.4).

   2023, Steffen Nijhuis, Yimin Sun, Eckart Lange, “Introduction: Adaptive Urban Transformation in the Pearl River Delta, China”, in Steffen Nijhuis, Yimin Sun, Eckart Lange, editors, Adaptive Urban Transformation: Urban Landscape Dynamics, Regional Design and Territorial Governance in the Pearl River Delta, China, Springer, →DOI, →ISBN, →ISSN, →OCLC, page 8