How is a 'megacity' defined?

A megacity is specifically defined as an urban area with a population of over 10 million people. This definition highlights the scale and significance of megacities in terms of their demographic and socio-economic impact. Megacities often serve as economic, cultural, and political hubs, attracting people from various regions due to the opportunities they offer.

The distinction in population threshold is essential because it emphasizes the unique challenges and dynamics faced by such large urban areas, including issues related to infrastructure, housing, and resource management. While other urban areas may have significant populations, the term "megacity" is reserved for those that exceed the 10 million mark, which sets them apart in discussions regarding urban development and planning.